Related Clues:

• Stop-watch button
• Zero out
• Adjust a stopwatch
• Machine button
• Adjust a stopped clock
• Button for bowlers
• Put back to zero, maybe
• Adjust, as a clock
• Put to 000
• Back to zero, say
• Alarm button
• Put back to the beginning
• Zeroing button
• A kind of button
• Spring forward, e.g.