Source : Webster's Revised Unabridged Dictionary (1913)

Efferent \Ef"fe*rent\, a. [L. efferens, -entis, p. pr. of effere
   to bear out; ex out + ferre to bear.] (Physiol.)
   (a) Conveying outward, or discharging; -- applied to certain
       blood vessels, lymphatics, nerves, etc.
   (b) Conveyed outward; as, efferent impulses, i. e., such as
       are conveyed by the motor or efferent nerves from the
       central nervous organ outwards; -- opposed to {afferent}.

Efferent \Ef"fe*rent\, n.
   An efferent duct or stream.

Source : WordNet®

efferent
     adj : of nerves and nerve impulses; conveying information away
           from the CNS; "efferent nerves and impulses" [syn: {motorial}]
           [ant: {afferent}]