horse 
(hôrs)
KEY NOUN:
- A large hoofed mammal (Equus caballus) having a short-haired coat, a long mane, and a long tail, domesticated since ancient times and used for riding and for drawing or carrying loads.
- An adult male horse; a stallion.
- Any of various equine mammals, such as the wild Asian species E. przewalskii or certain extinct forms related ancestrally to the modern horse.
- A frame or device, usually with four legs, used for supporting or holding.
- Sports A vaulting horse.
- Slang Heroin.
- Horsepower. Often used in the plural.
- Mounted soldiers; cavalry: a squadron of horse.
- Geology
- A block of rock interrupting a vein and containing no minerals.
- A large block of displaced rock that is caught along a fault.
VERB: horsed,
hors·ing,
hors·es VERB: tr.
- To provide with a horse.
- To haul or hoist energetically: "Things had changed little since the days of the pyramids, with building materials being horsed into place by muscle power" (Henry Allen).
VERB: intr.- To be in heat. Used of a mare.
ADJECTIVE:
- Of or relating to a horse: a horse blanket.
- Mounted on horses: horse guards.
- Drawn or operated by a horse.
- Larger or cruder than others that are similar: horse pills.
PHRASAL VERB: horse around Informal - To indulge in horseplay or frivolous activity: Stop horsing around and get to work.
IDIOMS: a horse of another/a different color- Another matter entirely; something else.
beat/flog a dead horse
- To continue to pursue a cause that has no hope of success.
- To dwell tiresomely on a matter that has already been decided.
be/get on (one's) high horse- To be or become disdainful, superior, or conceited.
hold (one's) horses- To restrain oneself.
the horse's mouth- A source of information regarded as original or unimpeachable.
ETYMOLOGY:Middle English, from Old English
hors