- any uncultivated species of Avena, especially a common weedy grass, A. fatua, resembling the cultivated oat.
- a hardy plant, Uvularia sessilifolia, of the lily family, of eastern North America, having deep green, hairy leaves and greenish-yellow, tubular flowers.
- sow one's wild oats, to have a youthful fling at reckless and indiscreet behavior, especially to be promiscuous before marriage.
Origin of wild oat
Examples from the Web for wild oat
Historical Examples of wild oat
If one could have it now in the wild-oat season; but that isn't to be expected.Norston's Rest
Ann S. Stephens
Get your wild-oat sowing done as soon as possible and come back.A Tatter of Scarlet
S. R. Crockett
Those of you who live near wild-rice or wild-oat marshes have a good chance to become acquainted with this Rail.
The Itinerary may well have been the production of his muse during his London wild-oat days.Literary Celebrities of the English Lake-District
- any of several temperate annual grasses of the genus Avena, esp A. fatua, that grow as weeds and have long bristles on their flower spikes