What is the meaning of Heads?

A shouted warning that something is falling from above, mind your heads; heads-up.

plural of head.

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.

The side of a coin that bears the picture of the head of state or similar.

Clipping of headphones.

The draft scheme of a bill before it is formally introduced to a parliament.

Tiles laid at the eaves of a house.

third-person singular simple present indicative of head

High-grade marijuana.

Source: wiktionary.org