The Collaborative International Dictionary of English v.0.48:

abducens \abducens\ n.
   1. a small motor nerve supplying the lateral rectus muscle of
      the eye.

   Syn: abducent, abducent nerve, nervus abducens, sixth cranial
        nerve
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

abducens
    n 1: a small motor nerve supplying the lateral rectus muscle of
         the eye [syn: abducent, abducent nerve, abducens,
         abducens nerve, nervus abducens, sixth cranial nerve]