(1):

(a.) A marine mollusk of the genus Dentalium, with a curved conical shell resembling a tooth. See Dentalium.

(2):

(a.) Of or pertaining to the teeth or to dentistry; as, dental surgery.

(3):

(a.) Formed by the aid of the teeth; - said of certain articulations and the letters representing them; as, d t are dental letters.

(4):

(a.) An articulation or letter formed by the aid of the teeth.