Spay

v. t. [imp. & p. p. SPAYED; p. pr. & vb. n. SPAYING.] [Cf. Armor. spachein, spaza, to geld, W. yspaddu, to exhaust, to empty, dyspaddu, to geld, Lat. spado, a eunuch, Gr. σπάδων, from σπάειν, σπᾷν, to draw out.] To extirpate the ovaries of; to castrate; — said only of female animals.