The Collaborative International Dictionary of English v.0.48:

Holocentrus \Holocentrus\ prop. n.
   The type genus of the family Holocentridae, comprising some
   of the squirrelfishes.

   Syn: genus Holocentrus.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Holocentrus
    n 1: type genus of the family Holocentridae; squirrelfishes
         [syn: Holocentrus, genus Holocentrus]