A shouted warning that something is falling from above, mind your heads; heads-up.
That part of older sailing ships forward of the forecastle and around the beak, used by the crew as their lavatory; still used as the word for toilets on a ship.
High-grade marijuana.
The draft scheme of a bill before it is formally introduced to a parliament.
The side of a coin that bears the picture of the head of state or similar.
Tiles laid at the eaves of a house.