noun, often attributive \ˈōt\

: a kind of grain that is widely grown

oats : the seeds of the oat plant used as feed for farm animals and in foods (such as bread and oatmeal) for people

Full Definition of OAT

a :  any of several grasses (genus Avena); especially :  a widely cultivated cereal grass (A. sativa)
b :  a crop or plot of the oat; also :  the seed of an oat —usually used in plural but singular or plural in construction
archaic :  a reed instrument made of an oat straw
feel one's oats
:  to act in a newly self-confident and often self-important manner

Illustration of OAT

Origin of OAT

Middle English ote, from Old English āte
First Known Use: before 12th century


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