Etymology
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crossbar (n.)

also cross-bar, "a transverse bar, bar laid or fixed transversely on another or others," mid-15c., from cross- + bar (n.1).

updated on May 19, 2018

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Definitions of crossbar from WordNet

crossbar (n.)
a horizontal bar that goes across something;
crossbar (n.)
game equipment consisting of a horizontal bar to be jumped or vaulted over;
crossbar (n.)
long thin horizontal crosspiece between two vertical posts;
From wordnet.princeton.edu, not affiliated with etymonline.