'arachnoid' definitions:
Definition of 'arachnoid'
From: WordNet
adjective
Relating to or resembling a member of the class Arachnida [syn: arachnoid, arachnidian, spidery, spiderlike, spiderly]
noun
The middle of the 3 meninges [syn: arachnoid, arachnoid membrane]
noun
Air-breathing arthropods characterized by simple eyes and four pairs of legs [syn: arachnid, arachnoid]