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

plural of head.

(nautical) 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.

Third-person singular simple present indicative form of head

(slang) High-grade marijuana.

In a very close one-on-one situation.

Direct, one-to-one.

Facing one another. / Directly, one-to-one.

(people) To do with heads. / (animals) To do with heads. / The end of a table. / (countable) The principal operative part of a machine or tool.

Of, relating to, or intended for the head.