nictitating membrane love

nictitating membrane

Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A transparent inner eyelid in many vertebrates that closes to protect and moisten the eye.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a transparent protective fold of skin acting as an inner eyelid in birds, reptiles and some mammals

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a protective fold of skin in the eyes of reptiles and birds and some mammals

Etymologies

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Examples

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