pony

pony
subs.
Ar. and P. πωλίον, τό.

PONY

equulus; equuleus; mannulus.

pony: perh. mannŭlus (a small Gallic horse, cob): Plin. Ep. 4, 2, 3 (or even, mannus: "manni equi pusilli et speciosi in deliciis erant hominum elegantiorum, quorum currus trahebant"): Mart. Equulus is properly a colt.