The Collaborative International Dictionary of English v.0.48:

Laridae \Laridae\ prop. n.
   The natural family of birds including the gulls and terns;
   the gull family.

   Syn: family Laridae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Laridae
    n 1: gull family: gulls and terns [syn: Laridae, family
         Laridae]