Question #900. Asked by dave_fl.
Last updated Aug 09 2021.
Answer has 19 votes
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zbeckabee Moderator 17 year member
Answer has 19 votes.
Currently voted the best answer.
To nictitate is to wink or blink.
Note: The Nictitating membrane is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for protection and to moisten the eye while also keeping visibility. Various reptiles, birds, and sharks have a full nictitating membrane, whereas, in many mammals, there is a small vestigial remnant of the membrane present in the corner of the eye.