Related Clues:

• Point of entry
• Site for a bell
• Cornet
• Warning device
• Opportunity, so to speak
• It's shown to some
• It could swing or revolve
• Blast source
• Cusp
• Satchmo's instrument
• It may get into a jamb
• Slammer?
• Kind of man
• Means of access
• Kind of employed "man"