Thayer's Greek Lexicon

 1. to cease from labour, to loiter
2. to be free from labour, to be at leisure, to be idle
  1) to have leisure for a thing
  2) to give one's self to a thing
3. of things
  1) of places, to be unoccupied, empty
  2) of a centurion's vacant office
  3) of vacant ecclesiastical offices
  4) of officers without charge