Related Clues:

• Radish, for one
• Rummage through
• Hair extension?
• Canine part
• Weakest of beers
• It may form underground connections
• Fans do it!
• Botanical anchor
• Part of an underground network?
• Etymological basis
• Lexicographic concern
• Ultimate cause
• Rummage for truffles, e.g.
• Support, with "for"
• Show bias