Where does “胸毛” come from?

胸毛 (Japanese) comes from Japanese 胸, from Japanese い, from Japanese や, from Japanese じゃ, from Japanese である, from Japanese で, from Japanese ぜ, from Japanese ぞえ.

胸毛 (Japanese): chest hair

Definitions

chest hair

Ancestry of “胸毛”, step by step

Step	Language	Word	Meaning
1	Japanese	胸	chest, breast; heart, inner thoughts; bosom,...
2	Japanese	い	Used in compounds with certain sentence-ending...
3	Japanese	や	and/or; is, are; Alternative form of いや
4	Japanese	じゃ	so, then—used for connecting to a reasonable...
5	Japanese	である	To be: the copula, with the same function as だ ...
6	Japanese	で	at; with, by, using; indicating the following...
7	Japanese	ぜ	sentence-ending particle signifying emphasis,...
8	Japanese	ぞえ	—
9	Japanese	え	Alternative form of い
10	Middle Chinese	衣	—

Every word from Middle Chinese 衣 →

胸毛 — Etymology, Origin & Word History | Etymology Explorer