ap·ter·yx /ˈæptərɪks/
  無尾無翼的走禽
  Ap·te·ryx n.  Zool. A genus of New Zealand birds about the size of a hen, with only short rudiments of wings, armed with a claw and without a tail; the kiwi. It is allied to the gigantic extinct moas of the same country. Five species are known.
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  apteryx
       n : nocturnal flightless bird of New Zealand having a long neck
           and stout legs; only surviving representative of the
           order Apterygiformes [syn: kiwi]