Synonyms: engaged, in use, busy
Definition: (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)
Usage: her line is busy; receptionists' telephones are always engaged; the lavatory is in use; kept getting a busy signal
Similar words: occupied
Definition: held or filled or in use
Usage: she keeps her time well occupied; the wc is occupied
Synonyms: in use
Definition: currently being used
Usage: robots are in use throughout industry
Similar words: used
Definition: employed in accomplishing something
Usage: the principle of surprise is the most used and misused of all the principles of war- H.H.Arnold & I.C.Eaker