Definition of shilling for English Language Learners. : a British coin used before 1971 that was equal to 1/20 of a British pound.
Esotropia is the name for crossed eyes. The condition of having eyes that don't align properly is strabismus or heterotropia. Esotropia is one type of strabismus. In exotropia, the eyes don't cross, but instead one seems to point outward. Strabismus and Tropia both mean crossed eyes.
In cases of crossed eyes, there is one eye that is off-focus from the object the person is trying to see. The brainâs natural tendency is to ignore the off-focus image, leaving the eye that produces it underused and weak. After time, this weakened eye may remain out of position, resulting in lazy eye.