1. An organized activity to improve the condition of disadvantaged people in society
   - social service

Type of: work

• Black Jack Pershing
• black kite
• black knapweed
• black knot
• black larch
• black letter
• black light
• black locust
• black lotion
• black lovage
• black lung
• black lung disease
• black magic
• black maire
• black mallee
• black mamba
• Black man
• black mangrove
• black margate
• Black Maria
• black marketeer
• black marlin
• black medick
• black morel
• black moss