| a chattering or flighty, light-headed person. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
"That wilfull and vnruly age, which lacketh rypenes and discretion, and (as wee saye) hath not sowed all theyr wyeld Oates." [Thomas Newton, "Lemnie's Touchstone of complexions," 1576]Hence, to feel (one's) oats "be lively," 1831, originally Amer.Eng.