cess·pool (s?s?po?ol?)n.1. A covered hole or pit for receiving drainage or sewage, as from a house.2. A filthy, disgusting, or morally corrupt place.[Perhaps alteration (influenced by pool) of obsolete cesperalle, drainpipe, from Middle English suspiral, vent, from Old French sospirail, breathing hole, from souspirer, to breathe, from Latin susp?r?re, to sigh; see suspire.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.cesspool (?s?s?pu?l) or cesspitn1. (Building) Also called: sink or sump a covered cistern, etc, for collecting and storing sewage or waste water2. a filthy or corrupt place: a cesspool of iniquity. [C17: changed (through influence of pool1) from earlier cesperalle, from Old French souspirail vent, air, from soupirer to sigh; see suspire]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014cess?pool (?s?s?pul) n. 1. a reservoir for the sediment of a drain or for receiving the sewage from a house. 2. a place of filth or immorality. [1575?85; cess (