The Collaborative International Dictionary
sesspool
Cesspool \Cess"pool`\ (-p[=oo]l`), n. [See Sesspol.] A cistern in the course, or the termination, of a drain, to collect sedimentary or superfluous matter; a privy vault; any receptacle of filth. [Written also sesspool.]
Wiktionary
sesspool
n. (archaic form of cesspool English)