Source : Webster's Revised Unabridged Dictionary (1913)

Cuspid \Cus"pid\ (k?s"p?d), n. [See {Cusp}.] (Anat.)
   One of the canine teeth; -- so called from having but one
   point or cusp on the crown. See {Tooth}.

Source : WordNet®

cuspid
     n : one of the four pointed conical teeth (two in each jaw)
         located between the incisors and the premolars [syn: {canine},
          {canine tooth}, {eyetooth}, {eye tooth}, {dogtooth}]