Engaged in business activity / (idiomatic) Ready to proceed in a desired activity.

Third-person singular simple present indicative form of busy

Of, to, pertaining to or utilized for purposes of conducting trade, commerce, governance, advocacy or other professional purposes. / Professional, businesslike, having concern for good business practice.

plural of business

(countable) A specific commercial enterprise or establishment. / (countable) A person's occupation, work, or trade. / (uncountable) Commercial, industrial, or professional activity.

simple past tense and past participle of busy

Obsolete spelling of busy

(Los Angeles) Hollywood, the entertainment industry. / (slang) prostitution

Used other than figuratively or idiomatically: see in, the, business, of. / (idiomatic) dealing heavily in or intimately involved with (a practice, behavior, etc.)

plural of by-business