Etymology
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crowbar (n.)

also crow-bar, "bar of iron with a wedge-shaped end," 1748, with bar (n.1), earlier simply crow (c. 1400); so called from its "beak" or from resemblance to a crow's foot; or possibly it is from crows, from Old French cros, plural of croc "hook."

updated on May 20, 2018

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Definitions of crowbar from WordNet

crowbar (n.)
a heavy iron lever with one end forged into a wedge;
Synonyms: wrecking bar / pry / pry bar
From wordnet.princeton.edu, not affiliated with etymonline.