n. (also y) (pl. Ys or Y’s) 1 twentyfifth letter of the alphabet. 2 (usu. y) Algebra second unknown quantity. 3 Yshaped thing.
n. (also y) (pl. Ys or Y’s) 1 twentyfifth letter of the alphabet. 2 (usu. y) Algebra second unknown quantity. 3 Yshaped thing.