A village in Saaremaa, Saare County, Estonia

The area measured from the outside surface of the outer building wall to the outside surface of the opposite outer building wall. Where balconies and mezzanine floors occur within the exterior walls of the building, they are included in this figure.

An international region in which obstacles to unrestricted trade have been reduced to a minimum.

(informal, US, military, aviation, research, espionage, ufology) A secret military facility, an airport, an airbase in Nevada Test and Training Range, Nevada, United States; A military base in Nevada, where advanced military aircraft are developed; foreign military aircraft are evaluated; and rumored to be where the US government hides extra-planetary alien visitors.

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

(air traffic control) an airspace within which it is dangerous for aircraft to fly.

(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.

Of or pertaining to an area.

(idiomatic) An area intermediate between two mutually exclusive states or categories, where the border between the two is fuzzy.

second-person singular simple present of be / first-person plural simple present of be / second-person plural simple present of be / third-person plural simple present of be