ARACHNOID

Definition

1. adjective relating to or resembling a member of the class Arachnida. — synonyms: arachnidian, spidery, spiderlike, spiderly
2. noun the middle of the 3 meninges. — synonyms: arachnoid_membrane
3. noun air-breathing arthropods characterized by simple eyes and four pairs of legs. — synonyms: arachnid