Definition of business
1a : a usually commercial or mercantile activity engaged in as a means of livelihood : trade, line in the restaurant business
b : a commercial or sometimes an industrial enterprise also : such enterprises the business district
c : a particular field of endeavor
the best in the business
4a : personal concern
none of your business
b : right you have no business speaking to me that way
5a : serious activity requiring time and effort and usually the avoidance of distractions
got down to business
b : maximum effort
6 : creation, concoction
7 : movement or action (such as lighting a cigarette) by an actor intended especially to establish atmosphere, reveal character, or explain a situation
— called also stage business
9 : a bowel movement
—used especially of pets
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The first known use of business was in the 14th century
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