Related Clues:

• Not yet 58-Down
• Serve entrees, for example
• Parade-ground command
• Cop call
• Serve in a diner
• Restraining order
• Drill order
• Remain on hold
• ''___! Who goes there?''
• What a vertical palm may mean
• "Cool your jets"
• What a raised index finger might mean
• Pull up
• Hold on, or hold off
• Stop progressing