1. corner; nook; recess (Usually kana)

2. shade; shadow; dark area (Usually kana, also written as 暈)

3. dark circles (under the eyes); dark rings (Usually kana, oft. written as クマ)

4. bend (in a road, river, etc.) (Poetic)

5. shading; gradation (Abbreviation)

6. kumadori; style of kabuki makeup used for violent roles (Abbreviation)