n.

1a [集合的] 毛; 髪の毛, 頭髪; 体毛.

・do up one's hair 髪を結う.

・let one's hair down 髪を解く (cf. let one's HAIR down).

・wear one's hair long [short] 髪を長く[短く]している.

・put [turn] up one's hair (髪を上げて一人前に)髪を結う.

・have one's own hair (かつらでなく)自分の髪である.

・have [get] one's hair cut [done] 散髪する (cf. haircut).

・part one's hair in the middle 髪を真ん中で分ける.

・do one's hair 髪を結う, 調髪する.

・The dog has a good coat of hair. その犬はよい毛並みだ.

・He has (a head of) gray [silver, white] hair. 彼は白髪(交じり)だ.