The Collaborative International Dictionary of English v.0.48:

Cervidae \Cervidae\ n.
   a natural family of deer including the reindeer, moose, elks,
   muntjacs, and roe deer.

   Syn: family Cervidae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cervidae
    n 1: deer: reindeer; moose or elks; muntjacs; roe deer [syn:
         Cervidae, family Cervidae]