Where does “zimbrișor” come from?

zimbrișor (Romanian) comes from Romanian zimbru, from Proto-Slavic zǫbrъ, from Proto-Indo-European ǵómbʰos, from Proto-Indo-European ǵómbʰ- — to pierce, gnaw through; tooth, horn, peg.

Ancestry of “zimbrișor”, step by step

Step	Language	Word	Meaning
1	Romanian	zimbru	wisent
2	Proto-Slavic	zǫbrъ	European bison, wisent (Bison bonasus)
3	Proto-Indo-European	ǵómbʰos	tooth; row of teeth; peg
4	Proto-Indo-European	ǵómbʰ-	to pierce, gnaw through; tooth, horn, peg

Every word from Proto-Indo-European ǵómbʰ- →Every word from Proto-Indo-European ǵómbʰos →Every word from Proto-Slavic zǫbrъ →