(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.

(of airspace) In which aircraft are forbidden to fly. / (of people) Who are forbidden to board an aircraft.

Not functioning properly. / Of a place, not to be entered.

Alternative form of no go

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

(cricket) The result of a one-day match in which a side fails to complete their innings, or to bat the minimum number of overs, because of bad weather.

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

(cricket) A ball delivered by a bowler in violation of any of the various laws; the extra run then credited to the batting side; the signal, with an arm outstretched, then made by the umpire.