Related Clues:

• Unique, endlessly entertaining picture card
• Most powerful chess piece
• Elizabeth, Victoria or Anne, for example
• Mercury group
• Elizabeth I or II
• Bed that's more than full
• Important bee
• Promoted pawn, usually
• Sounds like neighbour¿s mam is a card
• Honour, or bestower of one
• Mercury's group on board?
• Evil character in 'Snow White'
• Ruler
• Hive head
• Promote (pawn)