Source : Webster's Revised Unabridged Dictionary (1913)

Debile \Deb"ile\, a. [L. debilis: cf. F. d['e]bile. See
   {Debility}.]
   Weak. [Obs.] --Shak.

Source : WordNet®

debile
     adj : lacking physical strength or vitality; "a feeble old woman";
           "her body looked sapless" [syn: {decrepit}, {feeble}, {infirm},
            {sapless}, {weak}, {weakly}]