Main Entry: spay

Pronunciation: \ˈspā, ÷ ˈspād\

Function: transitive verb

Inflected Form(s): spayed \ˈspād, ÷ ˈspā-dəd\; spay·ing \ˈspā-iŋ, ÷ ˈspā-diŋ\

Etymology: Middle English, from Anglo-French espeer to pierce, castrate, from espee sword, from Latin spatha sword — more at spade

Date: 15th century

: to remove the ovaries and uterus of (a female animal)