Definitions
1.nounA blue signal flag with a white rectangle in the centre, signifying "P". When flown alone, indicates that a ship is ready to sail, requiring all crew members and passengers to return on board.
2.nounIn whist, a play that calls for trumps by throwing away a higher card of a suit while holding a lower one.
3.nounThe American coot, Fulica americana.
4.verbIn whist, to play a blue peter.