Source : Webster's Revised Unabridged Dictionary (1913)

Recumb \Re*cumb"\ (-k?m"), v. i. [L. recumbere; pref. re- back +
   cumbere (in comp.), akin to cubare to lie down.]
   To lean; to recline; to repose. [Obs.] --J. Allen (1761).

Source : WordNet®

recumb
     v : lean in a comfortable resting position; "He was reposing on
         the couch" [syn: {repose}, {recline}]