Related Clues:

• Porkpie or pillbox
• It's passed for money
• Derby or bowler
• Party handout, perhaps
• Chef's accoutrement
• It's over your head
• Candidate's throw-in
• It may be checked
• It goes over your head
• It may be passed or cocked
• Head liner?
• Word with box or trick
• Bowler, e.g.
• Bowler
• Head cover