busy (Verb) — Keep busy with. ex. "She busies herself with her butterfly collection"
busy (Adjective) — Actively or fully engaged or occupied. ex. "busy with her work" ex. "a busy man" ex. "too busy to eat lunch"
busy (Adjective) — Overcrowded or cluttered with detail. ex. "a busy painting"
busy (Adjective) — Intrusive in a meddling or offensive manner. ex. "busy about other people's business"
busy (Adjective) — Crowded with or characterized by much activity. ex. "a very busy week" ex. "a busy life" ex. "a busy street" ex. "a busy seaport"
busy (Adjective) — (of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability. ex. "her line is busy" ex. "kept getting a busy signal"