adjective: (of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)
Example: "Her line is busy"
adjective: overcrowded or cluttered with detail
Example: "A busy painting"
adjective: crowdedwith or characterized by much activity
Example: "A very busy week"
adjective: actively or fully engaged or occupied
Example: "Busy with her work"
adjective: intrusive in a meddling or offensive manner