What is "waste gate"

Waste \Waste\, a. [OE. wast, OF. wast, from L. vastus, influenced by the kindred German word; cf. OHG. wuosti, G. w["u]st, OS. w?sti, D. woest, AS. w[=e]ste. Cf. Vast.]

1. Desolate; devastated; stripped; bare; hence, dreary; dismal; gloomy; cheerless.

   The dismal situation waste and wild.
   --Milton.

   His heart became appalled as he gazed forward into the waste darkness of futurity.
   --Sir W. Scott.

2. Lying unused; unproductive; worthless; valueless; refuse; rejected; as, waste land; waste paper.

   But his waste words returned to him in vain.
   --Spenser.

   Not a waste or needless sound, Till we come to holier ground.
   --Milton.

   Ill day which made this beauty waste.
   --Emerson.

3. Lost for want of occupiers or use; superfluous. And strangled with her waste fertility. --Milton. Waste gate, a gate by which the superfluous water of a reservoir, or the like, is discharged. Waste paper. See under Paper. Waste pipe, a pipe for carrying off waste, or superfluous, water or other fluids. Specifically:

   1. (Steam Boilers) An escape pipe. See under Escape.

   2. (Plumbing) The outlet pipe at the bottom of a bowl, tub, sink, or the like. Waste steam.

      1. Steam which escapes the air.

      2. Exhaust steam.

         Waste trap, a trap for a waste pipe, as of a sink.