Definition of "Busy" :
verb: keep busy with
adjective: crowded with or characterized by much activity
"A very busy week."
adjective: actively or fully engaged or occupied
"Busy with her work."
adjective: intrusive in a meddling or offensive manner
"Busy about other people's business."
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)
"Her line is busy."
adjective: overcrowded or cluttered with detail
"A busy painting."