mustang

noun3

1. •
   A small, hardy, naturalized (feral) horse of the North American west.

   • The mustang pony, the invariable companion of the inhabitant of the prairie, whether he is rich or poor, is a little creature, apparently narrow-chested, and small across the loins. — 1846
2. •
   (US, slang) A merchant marine who joined the U.S. Navy as a commissioned officer during the American Civil War.

   • He is a product of the merchant marine and is one of the officers called "Mustangs" who entered the navy during the Civil War. — 1903
3. •
   (US, slang) A commissioned officer who started military service as an enlisted person.

   • […] and the chief engineer is a "mustang" — that is, an officer who has risen from the ranks of enlisted men. — 1918

verb1

1. •
   (US) To hunt mustangs (wild horses), either for military use or for slaughter as pet food.

noun2

1. •
   An American sports car, manufactured by Ford Motor Company from 1964 till present, a cultural icon and the longest-produced Ford nameplate.
2. •
   The P-51 Mustang was a single-seat fighter plane designed by North American Aviation in 1940.