Related Clues:

• Pressure opening
• Pressure opener
• Puncture opening?
• Start to puncture?
• Prefix for pressure
• Beginning for "puncture"
• Needle (Pref.)
• Prefix with pressure or point
• Lead-in to pressure
• Puncture lead-in
• Prefix with pressure or puncture
• Puncture prefix
• It means ''sharp''
• Needle front?
• Lead-in to puncture