Word Study
nictitating membrane
WORDNET DICTIONARY
Noun nictitating membrane has 1 sense
- nictitating membrane(n = noun.body) third eyelid - a protective fold of skin in the eyes of reptiles and birds and some mammals; Array is a part of eye, oculus, optic
is a kind of protective fold
has particulars: haw
For further exploring for "nictitating membrane" in Webster Dictionary Online