Related Clues:

• Start for step or stop
• Lunch hour
• Traditional fastball sign
• Start of long-distance dialing
• Major airline
• Observe Yom Kippur, e.g.
• ''A Chorus Line'' tune
• Do penance
• As one
• Perform penance
• Pay the penalty
• Word before ''Blast off!''
• Combined
• Word surrounding ''on'' and ''by''
• Single word