The Collaborative International Dictionary of English v.0.48:
dyed-in-the-wool \dyed-in-the-wool\ adj. 1. thoroughly imbued; thoroughgoing; uncompromising; complete; unmitigated; through-and-through. [PJC] 2. dyed before being spun or woven into cloth. Syn: yarn-dyed. [WordNet 1.5]