bronco

What it means

1. A horse of western North America that is wild or not fully broken.

   1 more example

   Swollen with greatness, slightly afraid lest the noble blood of Nottingham change its mind and leave him at any street corner, Babbitt paraded with Sir Gerald Doak to the movie palace and in silent bliss sat beside him, trying not to be too enthusiastic, lest the knight despise his adoration of six-shooters and broncos.

   1922, Sinclair Lewis, “19”, in Babbitt

   Synonyms: bronc, broncho

In a sentence

Swollen with greatness, slightly afraid lest the noble blood of Nottingham change its mind and leave him at any street corner, Babbitt paraded with Sir Gerald Doak to the movie palace and in silent bliss sat beside him, trying not to be too enthusiastic, lest the knight despise his adoration of six-shooters and broncos.

1922, Sinclair Lewis, “19”, in Babbitt

Where it comes from

1. Spanishbronco“rough”
2. Englishbronco

Borrowed from Spanish bronco (“rough”), 19th c. which in Mexican usage also describes a horse that has not been broken and is still wild.