Source : Webster's Revised Unabridged Dictionary (1913)

Leisure \Lei"sure\, a.
   Unemployed; as, leisure hours.

Leisure \Lei"sure\ (l[=e]"zh[-u]r; 135), n. [OE. leisere,
   leiser, OF. leisir, F. loisir, orig., permission, fr. L.
   licere to be permitted. See {License}.]
   1. Freedom from occupation or business; vacant time; time
      free from employment.

            The desire of leisure is much more natural than of
            business and care.                    --Sir W.
                                                  Temple.

   2. Time at one's command, free from engagement; convenient
      opportunity; hence, convenience; ease.

            He sighed, and had no leisure more to say. --Dryden.

   {At leisure}.
      (a) Free from occupation; not busy.
      (b) In a leisurely manner; at a convenient time.

Source : WordNet®

leisure
     n 1: time available for ease and relaxation; "his job left him
          little leisure" [syn: {leisure time}]
     2: freedom to choose a pastime or enjoyable activity; "he
        lacked the leisure for golf"