Etymology
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cuspid (n.)

"a point," 1743, from Latin cuspis (genitive cuspidis) "point, pointed end," a word of unknown origin. In English from 1640s as cuspis. As "a cuspid tooth" by 1828. Related: Cuspidate (adj.), which is attested from 1690s; cuspidal.

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Definitions of cuspid

cuspid (n.)
one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars;
Synonyms: canine / canine tooth / eyetooth / eye tooth / dogtooth
From wordnet.princeton.edu