Available Definitions:
1) superl. - Easily frightened; timid; as, a shy bird.
2) superl. - Reserved; coy; disinclined to familiar approach.
3) superl. - Cautious; wary; suspicious.
4) a. - To start suddenly aside through fright or suspicion; -- said especially of horses.
5) v. t. - To throw sidewise with a jerk; to fling; as, to shy a stone; to shy a slipper.
6) n. - A sudden start aside, as by a horse.
7) n. - A side throw; a throw; a fling.