nictitating membrane 名詞
 瞬膜


 Nic·ti·tate v. i.  To wink; to nictate.
 Nictitating membrane Anat., a thin membrane, found in many animals at the inner angle, or beneath the lower lid, of the eye, and capable of being drawn across the eyeball; the third eyelid; the haw.

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 Har·de·ri·an a. Anat. A term applied to a lachrymal gland on the inner side of the orbit of many animals which have a third eyelid, or nictitating membrane. See Nictitating membrane, under Nictitate.

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 Haw, n.  Anat. The third eyelid, or nictitating membrane. See Nictitating membrane, under Nictitate.


 nictitating membrane
      n : a protective fold of skin in the eyes of reptiles and birds
          and some mammals [syn: third eyelid]