pika

from WordNet (r) 3.0 (2006)

pika
    n 1: small short-eared burrowing mammal of rocky uplands of Asia
         and western North America [syn: {pika}, {mouse hare}, {rock
         rabbit}, {coney}, {cony}]

from The Collaborative International Dictionary of English v.0.48

Pika \Pi"ka\, n. (Zool.)
   Any one of several species of tailless rodents of the genus
   {Ochotona} (formerly {Lagomys}), resembling small rabbits,
   but with short ears alnd legs. They inhabit the high
   mountains of Asia and America. Called also {calling hare},
   and {crying hare} and {rock rabbit}. See {Chief hare}.
   [1913 Webster +PJC]