Related Clues:

• Hockey official
• Dict., e.g.
• Field arbiter
• Ump relative
• Prepare some dim sum
• Fault caller
• NFL official
• Court official
• Prepare cappuccino milk
• Bout arbiter
• Power for Robert Fulton
• Fulton's power source
• Vapour
• One who cries foul, briefly
• Zebra on a field