(Philippines) a street sweeper

(obsolete) To encourage an archer when shooting by crying "aim". / (obsolete, by extension) To applaud or encourage.

To fight to no purpose, or against an imaginary enemy.

Alternative spelling of it ain't over 'til the fat lady sings

(medicine) The sensation of inadequate inspiration that typically results in an increased respiratory drive, and deep, rapid and laboured breathing.

(archaic) compressed air

present participle of build castles in the air.

(archaic or poetic) simple past tense and past participle of build castles in the air.

simple past tense and past participle of build castles in the air.

Third-person singular simple present indicative form of build castles in the air