Definition of wild oats:
(n) :
Oats of non-cultivated species of Avena, a genus of grasses.
(n) :
Chasmanthium latifolium, a grass, Indian woodoats
(n) :
Species of Aegilops, goatgrass.
(n) :
Species of Uvularia, the bellworts.
(n) :
(archaic) A rake.