Related Clues:

• Start with step or stop
• See 17-Down
• Entry
• 'Let's Make a Deal' option
• 'In' place
• End-of-class signal
• It can get you in on the ground floor
• It may be a trap
• Unit of nautical time
• Way in or out
• Kind of prize
• Opportunity, metaphorically
• Time unit at sea
• Ring source
• Morrison's backup