The sources checked do not record hossy as a personal name or give it a meaning.
Affection
Cute
Brown, Black, Gold, White
Any Size
Unisex
English
H
5 Letters
A diminutive form of an affectionate name, often used for pets
From Ge'ez ኀይል (hayl), meaning "power, force, strength".
Recorded as a rare modern English given name for girls