nictitating membrane
Definitions
A transparent protective fold of skin acting as an inner eyelid in birds, reptiles and some mammals.
Equivalents
5 more languages
Examples
“2015, Elizabeth Royte, Vultures Are Revolting. Here’s Why We Need⟳ to Save⟳ Them., National Geographic (December 2015)https://web.archive.org/web/20151213095110/http://ngm.nationalgeographic.com/2016/01/vultures-text As the wildebeest shrinks, the circle of sated birds lounging in the short grass expands. With bulging crops, the vultures settle⟳ their heads atop folded wings and slide⟳ their nictitating membranes shut⟳.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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