Strabismus \Stra*bis"mus\, n. [NL., fr. Gr. ?, fr. ? to squint, fr. ? distorted, squinting.]

(Med.) An affection of one or both eyes, in which the optic axes can not be directed to the same object, -- a defect due either to undue contraction or to undue relaxation of one or more of the muscles which move the eyeball; squinting; cross-eye.

Source: Webster's Revised Unabridged Dictionary (1913)