Related Clues:

• Marijuana
• Pigs do it
• Thistle, e.g.
• Rummage
• Radish, for one
• Rummage through
• Hair extension?
• Canine part
• Weakest of beers
• It may form underground connections
• Fans do it!
• Rooted-out plant
• Botanical anchor
• Part of an underground network?
• Etymological basis