Source : Webster's Revised Unabridged Dictionary (1913)

Recumbent \Re*cum"bent\ (-bet), a. [L. recumbens, -entis, p. pr.
   of recumbere. See {Recumb}, {Incumbent}.]
   Leaning; reclining; lying; as, the recumbent posture of the
   Romans at their meals. Hence, figuratively; Resting;
   inactive; idle. -- {Re*cum"bent*ly}, adv.

Source : WordNet®

recumbent
     adj : lying down; in a position of comfort or rest [syn: {accumbent},
            {decumbent}, {reclining}]