(1):

(n.) The act or process of removing a cataract, by applying the needle to its anterior surface, and depressing it into the vitreous humor in such a way that the front surface of the cataract becomes the upper one and its back surface the lower one.

(2):

(n.) The act of leaning or reclining, or the state of being reclined.

(3):

(n.) The angle which the plane of the dial makes with a vertical plane which it intersects in a horizontal line.