Related Clues:

• Start for step or stop
• Lunch hour
• Traditional fastball sign
• Start of long-distance dialing
• Sacagawea, for one
• ''A Chorus Line'' tune
• Word before ''Blast off!''
• Combined
• Word surrounding ''on'' and ''by''
• Single word
• Half and half?
• Sometimes it's for the money
• Start of a long distance call
• Washington is on it
• It's heard before a liftoff