Chinese
 | 
 chest; bosom; heart 
chest; bosom; heart; mind; thorax 
  | 
hair; pore; fur | 
simp. and trad. (胸毛)
 | 
 胸
 | 
 毛
 | 
Noun
胸毛 
-  chest hair
 
 
Japanese
Etymology
Compound of 胸 (muna, “chest”) + 毛 (ke, “hair”).[1][2]The ke changes to ge as an instance of rendaku (連濁). 
Pronunciation
Noun
胸毛 (hiragana むなげ, romaji munage)
-  chest hair
 
References
- 
↑  1988, 国語大辞典(新装版) (Kokugo Dai Jiten, Revised Edition) (in Japanese), Tōkyō: Shogakukan
 
- 
1 2  2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13905-9