1.Definition: (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", "Kept getting a busy signal"

Related Adjective(s):engaged

2.Definition: actively or fully engaged or occupied

"Busy with her work", "A busy man", "Too busy to eat lunch"

3.Definition: crowded with or characterized by much activity

"A very busy week", "A busy life", "A busy street", "A busy seaport"

4.Definition: intrusive in a meddling or offensive manner

"Busy about other people's business"

Related Adjective(s):busybodied, interfering, meddlesome, meddling, officious

5.Definition: overcrowded or cluttered with detail

"A busy painting"

Related Adjective(s):fussy