The Collaborative International Dictionary of English v.0.48:

Cross-eye \Cross"-eye`\ (-?`), n.
   See Strabismus.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

cross-eye \cross-eye\ adj.
   convergent strabismus; a disorder in which one or both eyes
   turn inward toward the nose rather than directly at the
   object of vision; crossed eyes.
   [PJC]

WordNet (r) 3.0 (2006):

cross-eye
    n 1: strabismus in which one or both eyes turn inward toward the
         nose [syn: cross-eye, crossed eye, convergent
         strabismus, esotropia]