Wiktionary
nictating membranes
n. (plural of nictating membrane English)
Usage examples of "nictating membranes".
In actual fact, he could hardly wait to lower his nictating membranes, but it comes to the same thing.
He swung his hands up and boxed Maror on either side of the throat, at the base of the nictating membranes that served as his vocal apparatus.
The nictating membranes of the third eyelid retracted so that his eyes were fully open and bright as the highest caliber peridots.
Why, that man even seemed to have nictating membranes on his eyes!
He closed his reptilian eyes briefly, which was no closing at all, for he had only nictating membranes.