Definitions
There is 1 meaning of the phrase
Third Eyelid.
Third Eyelid - as a noun
A protective fold of skin in the eyes of reptiles and birds and some mammals
Synonyms (Exact Relations)
nictitating membraneHypernyms (Closely Related)
protective foldHyponyms (Broadly Related)
Example Sentences
"The third eyelid, also known as the nictitating membrane, protects the eye of many animals."
"Dogs have a third eyelid that helps keep their eyes moist and protected."
"The third eyelid can be seen in birds when they blink."
"Cats have a well-developed third eyelid that can partially cover their eyes."
"The third eyelid in camels helps protect their eyes from sand and dust in deserts."