1834 W. A. Caruthers II. xx. 207 The fact is..this pen you made me is like an old field-colt, a little skittish in the breakin.
1894 Feb. 561/2 They ain't never any tellin' what's in one o' these here wild old-field colts, special sech a ontimely-lookin' one as this here.
1994 R. Hendrickson 49 Catch colt, a Western euphemism for an illegitimate child, called an old-field colt and a woods colt in other regions.