Definition of: oat

(ōt) noun
1. Usually plural A cereal grass (Avena sativa) extensively cultivated for its edible grain.
2. A musical pipe made from a stem of the oat; a shepherd's pipe; hence, a pastoral song.
—to feel one's oats
1. To feel lively; have a sense of vitality.
2. To feel important.
—to sow one's wild oats To indulge in the follies or excesses to which youth is liable. [OE āte]