Related Clues:

• Tarry
• Sentry's cry
• 'Yo!'
• 'Stop!'
• Take orders, in a way
• 'Holy smokes!'
• 'Psst!'
• 'Don't move!'
• Hold on
• Don't go
• Attention-getter
• 'No way!'
• Stand in line
• Discontinue
• Sentry's 'Stop!'