In use Meaning, Definition & Usage
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adjective satellite (of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)
busy; engaged.
- her line is busy
- receptionists' telephones are always engaged
- the lavatory is in use
- kept getting a busy signal
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adjective satellite currently being used
- robots are in use throughout industry
WordNet
Definitions
- .
(a) In employment; in customary practice observance.(b) In heat; said especially of mares. J. H. Walsh.