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Webster 1913 Edition
Nictitate
Nic′ti-tate
,Verb.
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.