Definition of obstruct

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obstruction >

ob·struct    (b-strkt, b-) KEY 

TRANSITIVE VERB:
ob·struct·ed, ob·struct·ing, ob·structs

1. To block or fill (a passage) with obstacles or an obstacle. See Synonyms at block.
2. To impede, retard, or interfere with; hinder: obstructed my progress. See Synonyms at hinder¹.
3. To get in the way of so as to hide from sight.

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ETYMOLOGY:
Latin obstruere, obstrct- : ob-, against ; see ob- + struere, to pile up; see ster-² in Indo-European roots

OTHER FORMS:
ob·structer or ob·structor(Noun), ob·structive(Adjective), ob·structive·ly(Adverb), ob·structive·ness(Noun)