Related Clues:

• It may be square
• Source
• Garden intruder
• Underground growth
• It may dig in deep
• Tooth or hair part
• Etymologist's interest
• One may be square
• Tend to the lawn
• Narc's target
• Bicuspid part
• Do garden work
• Kind of note
• Tend to the garden
• Crab grass, e.g.