lagomorpha

from WordNet (r) 3.0 (2006)

Lagomorpha
    n 1: rabbits; hares; pikas; formerly considered the suborder
         Duplicidentata of the order Rodentia [syn: {Lagomorpha},
         {order Lagomorpha}]

from The Collaborative International Dictionary of English v.0.48

Lagomorpha \Lag`o*mor"pha\ (l[a^]g`[-o]*m[^o]r"f[.a]), prop. n.
   pl. [NL., fr. Gr. lagw`s a hare + morfh` form.] (Zool.)
   an order of rodent-like mammals, comprising the hares,
   rabbits, and pikas. They have four incisors in the upper jaw.
   Called also {Duplicidentata}. They were formerly classified
   together with the rodents, but the {Rodentia} and
   {Lagomorpha} are now classed as separate orders.
   [1913 Webster +PJC]