What is "u-bend"

Usage examples of "u-bend".

All of the vapors emanating from the hot gray mass in the bottom of the kettle were now channeled up into the copper dunce-cap, which had but one outlet: a copper chimney that bent round to the side and developed into a snergly tube, terminated by a U-bend that led into the bottom of the smaller vessel—the bubbler—with the glass port-hole in its side.

I was just sitting in the U-bend, thinking about death, and it fell right through the top of my head,” said Myrtle, glaring at them.

Elkins had taken up his position in a thicket which stood in the centre of a level patch of sand in the old bed of the river,—the bed it had used five years before and forsaken at the time of the big flood when it cut itself a new channel and made the U-bend which now surrounded this piece of land on three sides.