bronco [< Am. E < Sp. bronco rough, unruly] DCHP-1 (pre-1967)
1 † n.
a wild or semiwild horse.
See also: bronc (def. 1)
2 n.
a stubborn, unruly, undisciplined person.
See also: bronc (def. 2)
3 n. — Slang
an Englishman, especially an English immigrant of the lower classes.