WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / N / nictitating membrane nictitating membrane noun 5 syllables 20 letters Scrabble 28 WWF 36 Definitions noun a protective fold of skin in the eyes of reptiles and birds and some mammals third eyelid Look “nictitating membrane” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →