IN USE

• (adj.) (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)

  "her line is busy", "receptionists' telephones are always engaged", "the lavatory is in use", "kept getting a busy signal"

  synonyms : busy , engaged

• (adj.) currently being used

  "robots are in use throughout industry"

WordNet® 3.0, © 2006 by Princeton University.

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