Related Clues:

• Archaeological site
• One way to get underground
• Probe
• Understand, slangily
• Archaeological excavation
• Sticker
• Needling remark
• Taunting remark
• Some cracks are full of it
• Get to the bottom of things?
• Really get into
• Jab
• Caustic remark
• Jab in the ribs
• Laggard, informally