You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: WORD 
Clue: The word spider comes from an Old English form of this verb, referring to its web-weaving
spin

Category: LITERARY E-MAIL ADDRESSES 
Clue: ageless-wonder@wilde-pictures.com
dorian gray

Category: "C" HERE 
Clue: It's the main stimulant in coffee & tea

caffeine