business

business /ˈbɪznəs/ noun
plural businesses
business
/ˈbɪznəs/
noun
plural businesses
Britannica Dictionary definition of BUSINESS
1 
[noncount]
a  : the activity of making, buying, or selling goods or providing services in exchange for money
— often used before another noun
— see also agribusiness, big business, in business (below), out of business (below), show business
b  : work that is part of a job
— sometimes used before another noun
c  : the amount of activity that is done by a store, company, factory, etc.
2 
[count] : an organization (such as a store, company, or factory) that makes, buys, or sells goods or provides services in exchange for money
— sometimes used before another noun
3 
[singular] : something that concerns a particular person, group, etc. : something that needs to be considered or dealt with
◊ The phrase mind your own business is used as an informal and often somewhat impolite way to tell someone to stop watching or asking about something that is private.
◊ To say that you were minding your own business when something happened means that you were doing what you normally do and were not bothering anyone.
◊ If you say something is nobody's business, you mean that it is private and other people do not need to know about it.
◊ Someone who has no business doing something has no right to do it.
4 
[noncount] : something that must be done
5 
[singular] : a matter, event, or situation — usually used after an adjective
— see also monkey business

business as usual

— used to say that something is working or continuing in the normal or usual way

business is business

— used to say that in order for a business to be successful it is necessary to do things that may hurt or upset people

in business

1 
: operating as a business
2 
informal : ready to begin doing or using something

like nobody's business

informal
: very well or quickly or in very large amounts

mean business

: to be serious about doing something

out of business

: closed down : no longer in business

the business

British slang
: a very good or impressive person or thing