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nicotinamide adenine dinucleotide
nicotinamide adenine dinucleotide phosphate
nicotine
nicotine gum
nicotine patch
nicotinic acid
nicotinism
nictitate
nictitating membrane
NIDA
Nidderdale
nidi
nidicolous
nidificate
nidifugous
nidify
nidus
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nictitating membrane
nic·ti·tat·ing mem·brane (plural nic·ti·tat·ing mem·branes)


noun 
Definition:
 
inner eyelid: a thin transparent layer of skin underneath the eyelid that can cover the eye surface of birds, reptiles, and some mammals to moisten and protect it
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