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line1  audio  (ln) KEY 

NOUN:
  1. Mathematics A geometric figure formed by a point moving along a fixed direction and the reverse direction.
    1. A thin continuous mark, as that made by a pen, pencil, or brush applied to a surface.
    2. A similar mark cut or scratched into a surface.
    3. A crease in the skin, especially on the face; a wrinkle.
    1. A real or imaginary mark positioned in relation to fixed points of reference.
    2. A degree or circle of longitude or latitude drawn on a map or globe.
    3. The equator. Used with the.
    1. A border or boundary: the county line.
    2. A demarcation: a line of darker water beyond the reef.
    3. A contour or an outline: the line of the hills against the evening sky.
    1. A mark used to define a shape or represent a contour.
    2. Any of the marks that make up the formal design of a picture.
    1. A cable, rope, string, cord, or wire.
    2. Nautical A rope used aboard a ship.
    3. A fishing line.
    4. A clothesline.
    5. A cord or tape used, as by builders or surveyors, for measuring, leveling, or straightening.
  2. A pipe or system of pipes for conveying a fluid: gas lines.
  3. An electric-power transmission cable.
    1. A wire or system of wires connecting telephone or telegraph systems.
    2. An open or functioning telephone connection: tried to get a free line.
    1. A passenger or cargo system of public or private transportation, as by ship, aircraft, or bus, usually over a definite route.
    2. A company owning or managing such a system.
    1. A railway track or system of tracks.
    2. A particular section of a railway network: the Philadelphia-Trenton line.
  4. A course of progress or movement; a route: a line of flight.
    1. A general method, manner, or course of procedure: different lines of thought; took a hard line on defense.
    2. A manner or course of procedure determined by a specified factor: development along socialist lines.
    3. An official or prescribed policy: the party line.
  5. A general concept or model. Often used in the plural: a trilogy along the lines of the Oresteia.
  6. A condition of agreement; alignment: brought the front wheels into line; a wage agreement in line with current inflation.
    1. One's trade, occupation, or field of interest: What line of work are you in?
    2. Range of competence: not in my line.
  7. Merchandise or services of a similar or related nature: carries a complete line of small tools.
  8. A group of persons or things arranged in a row or series: long lines at the box office; a line of stones.
    1. Ancestry or lineage.
    2. A series of persons, especially from one family, who succeed each other: a line of monarchs; comes from a long line of bankers.
    3. A strain, as of livestock or plants, developed and maintained by selective breeding.
    1. A sequence of related things that leads to a certain ending: a line of argument.
    2. An ordered system of operations that allows a sequential manufacture or assembly of goods at all or various stages of production.
    3. The personnel of an organization or a business who actually make a product or perform a service.
    1. A horizontal row of printed or written words or symbols.
    2. One of the horizontal scans forming a television image.
  9. A brief letter; a note: I'll drop you a line.
    1. A unit of verse ending in a visual or typographic break and generally characterized by its length and meter: a line of iambic pentameter.
    2. The dialogue of a theatrical presentation, such as a play. Often used in the plural: spent the weekend learning her lines.
  10. Informal Glib or insincere talk, usually intended to deceive or impress: He kept on handing me a line about how busy he is.
  11. Abbr. lines Chiefly British
    1. A marriage certificate.
    2. A usually specified number of lines of prose or verse to be written out by a pupil as punishment.
  12. Games A horizontal demarcation on a scorecard in bridge dividing the honor score from the trick score.
    1. A source of information.
    2. The information itself: got a line on the computer project.
    1. Music One of the five parallel marks constituting a staff.
    2. A sustained melodic or harmonic part in a piece: a rock song with a driving bass line.
    1. A formation in which elements, such as troops, tanks, or ships, are arranged abreast of one another.
    2. The battle area closest to the enemy; the front.
    3. The combat troops or warships at the front, arrayed for defense or offense.
    4. The regular forces of an army or a navy, in contrast to staff and support personnel.
    5. The class of officers in direct command of warships or of army combat units.
    6. A bulwark or trench.
    7. An extended system of such fortifications or defenses: the Siegfried line.
  13. Sports
    1. A foul line.
    2. A real or imaginary mark demarcating a specified section of a playing area or field.
    3. A real or imaginary mark or point at which a race begins or ends.
    4. The center and two wings making up a hockey team's offensive unit.
    5. Football A line of scrimmage.
    6. Football The linemen considered as a group.
  14. Informal The odds a bookmaker gives, especially for sports events.
  15. The proportion of an insurance risk assumed by a particular underwriter or company.
  16. Slang A small amount of cocaine arranged in a thin, usually tightly rolled strip for sniffing.
  17. Archaic One's lot or position in life.
VERB:
lined, lin·ing, lines
VERB:
tr.
  1. To mark, incise, or cover with a line or lines.
  2. To represent with lines.
  3. To place in a series or row.
  4. To form a bordering line along: Small stalls lined the alley.
  5. Baseball To hit (a ball) sharply so that it flies low and fast.
VERB:
intr.
Baseball
To hit a line drive: lined out to shortstop.

PHRASAL VERB:
line up
  1. To arrange in or form a line.
  2. Football To take one's position in a formation before a snap or kickoff.
  3. To organize and make ready: lined up considerable support for the bill.

IDIOMS:
all along the line
  1. In every place.
  2. At every stage or moment.
down the line
  1. All the way; throughout: Errors are to be found down the line.
  2. At a point or an end in the future.
in line for
Next in order for: in line for the presidency.
on the line
  1. Ready or available for immediate payment.
  2. So as to be risked; in jeopardy: "Careers were on the line once again" (Seymour M. Hersh).
out of line
  1. Uncalled-for; improper.
  2. Unruly and out of control.

ETYMOLOGY:
Middle English, from Old English lne, and from Old French ligne both from Latin lnea, string, cord, from feminine of lneus, of linen, from lnum, thread, linen; see lno- in Indo-European roots


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