The Collaborative International Dictionary
Wool-dyed
Wool-dyed \Wool"-dyed`\, a. Dyed before being made into cloth, in distinction from piece-dyed; ingrain.
Wiktionary
wool-dyed
a. 1 dye before being made into cloth, in distinction from piece-dyed. 2 (context figuratively English) dyed in the wool; set in one's ways; steadfast