(religion) A figure in Abrahamic religions, believed to have built an ark to save his family and members of each species of animal from the Great Flood. / A male given name from Hebrew. / A surname.

pointless, useless; not worth doing, especially because it is not likely to succeed / (colloquial) No point or advantage.

(idiomatic, derogatory) Having a superficially positive appearance that is belied by the reality, e.g., superficially elegant and beautiful but actually common.

An absence; failure to show up or to make a scheduled appearance, especially at a hotel or a place of employment. / A person or group that does not show up. / Short for no show sock.

To fail to show up for something.

(idiomatic) No other possible action, choice or option. / (idiomatic) No other possible interpretation.

An airspace in which aircraft, especially military aircraft, are forbidden to fly.

(baseball) A game in which no batter on one of the teams got a hit.

(boxing); (informal)

(often hyphenated) Characterized by an absence of conditions or obligations.