engaged in some business; hard at work (either habitually or only for the time being); occupied with serious affairs; not idle nor at leisure; as, a busy merchant.-constantly at work; diligent; active.-crowded with business or activities; -- said of places and times; as, a busy street.-officious; meddling; foolish active.-careful; anxious.-to make or keep busy; to employ; to engage or keep engaged; to occupy; as, to busy one's self with books.