Dictionary entry

Nictitate

Webster's Dictionary 1913

Nic″ti‐tate (?), v. i. [See Nictate.] 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.