Source : Webster's Revised Unabridged Dictionary (1913)

Hibernate \Hi"ber*nate\, v. i. [imp. & p. p. {Hibernated}; p.
   pr. & vb. n. {Hibernating}.] [L. hibernare, hibernatum, fr.
   hibernu? wintry. See {Hibernal}.]
   To winter; to pass the season of winter in close quarters, in
   a torpid or lethargic state, as certain mammals, reptiles,
   and insects.

         Inclination would lead me to hibernate, during half the
         year, in this uncomfortable climate of Great Britain.
                                                  --Southey.

Source : WordNet®

hibernating
     adj : in a condition of biological rest or suspended animation;
           "dormant buds"; "a hibernating bear"; "torpid frogs"
           [syn: {dormant}, {hibernating(a)}, {torpid}]