A warning that enemies are about and a battle is about to begin. / A statement of impending doom.

(informal) Alternative form of how do you do

(mathematics) A measure of the extent of a surface; it is measured in square units. / A particular geographic region. / Any particular extent of surface, especially an empty or unused extent.

(idiomatic) An informal greeting, not requiring a literal response. In form a question, and thus followed by a question mark. Typical responses include:

(US) A metropolitan area with one or more other metropolitan and or micropolitan area components defined with it.

An area of population usually with a central or core city and surrounding towns or suburbs.

The ventral tegmentum

third-person plural present indicative of there be. see also there is.

(idiomatic) When the pressure is on; when the situation is urgent or critical

(informal, vulgar) I have a strong need to urinate.