bronco

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

• (General American) IPA^(key): /ˈbɹɑŋkoʊ/
• (Received Pronunciation) IPA^(key): /ˈbɹɒŋkəʊ/
• Rhymes: -ɒŋkəʊ

bronco (plural broncos)

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

   Synonyms: bronc, broncho

   • 1922, Sinclair Lewis, “19”, in Babbitt:

     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.

• mustang

bronco m (plural bronchi)

1. (anatomy) bronchus, bronchial tube

bronco m (feminine singular bronca, masculine plural broncos, feminine plural broncas, comparable)

1. obtuse, dumb (intellectually dull)

   Synonyms: obtuso, parvo

• (dumb): See here

From Vulgar Latin bruncus, a cross of broccus and truncus (“trunk”).

• IPA^(key): /ˈbɾonko/, [ˈbɾõŋko]

bronco (feminine singular bronca, masculine plural broncos, feminine plural broncas)

1. harsh, sharp (of a sound)

• bronca

• English: bronco