wild oat

noun

Definition of wild oat

1 :any of several Old World wild grasses (genus Avena); especially :a Eurasian annual weed (A. fatua) common in meadows and pastures
2 wild oats plural :offenses and indiscretions ascribed to youthful exuberance usually used in the phrase sow one's wild oats

First Known Use of wild oat

15th century


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