sump

[ suhmp ]
/ sʌmp /

noun

a pit, well, or the like in which water or other liquid is collected.
Machinery. a chamber at the bottom of a machine, pump, circulation system, etc., into which a fluid drains before recirculation or in which wastes gather before disposal.
Mining.
  1. a space where water is allowed to collect at the bottom of a shaft or below a passageway.
  2. a pilot shaft or tunnel pushed out in front of a main bore.
British. crankcase.
British Dialect. a swamp, bog, or muddy pool.

Origin of sump

1375–1425; late Middle English sompe < Middle Low German or Middle Dutch sump; cognate with German Sumpf; akin to swamp
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sump

British Dictionary definitions for sump

sump
/ (sʌmp) /

noun

a receptacle, such as the lower part of the crankcase of an internal-combustion engine, into which liquids, esp lubricants, can drain to form a reservoir
another name for cesspool
mining
  1. a depression at the bottom of a shaft where water collects before it is pumped away
  2. the front portion of a shaft or tunnel, ahead of the main bore
British dialect a muddy pool or swamp

Word Origin for sump

C17: from Middle Dutch somp marsh; see swamp
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012