Any standard of dress used in many business environments that excludes certain casual and overly formal clothes, such as (for men) a business suit and tie.

plural of business architect

plural of busy beaver

(US, telephony) An audible signal to the calling party that indicates failure to complete the requested connection; an engaged tone

Indicates that the telephone line is busy.

A privately-owned and operated business with relatively small turnover and staff numbers, typically seen as constituting part of a specific commercial or economic sector.

central business district

A higher education institution that specializes in business studies

One who owns a business.

(dated, colloquial) theatrical parts that require the actor to be dressed well