Dobbin

1. (n.) An old jaded horse.

2. (n.) Sea gravel mixed with sand.

Thesaurus Entries

Houyhnhnm, brood mare, charger, colt, courser, critter, entire, entire horse, equine, filly, foal, gelding, horse, mare, mount, nag, prancer, stallion, steed, stud, studhorse, tarpan, top horse, war-horse, wild horse