hands up! (put your hands in the air)

(idiomatic) castle in the air (idea that is unlikely to be ever realised)

airlock (chamber used to provide access to and from a spacecraft or submarine)

breathlessness (state of being breathless or out of breath) / Used other than figuratively or idiomatically: see falta, de, ar.

hot-air balloon (a balloon-shaped aircraft filled with hot air)

plural of balão de ar quente

(idiomatic, of a person) to show up, to finally appear