σήπω
I. "to make rotten" or "putrid, make to fester", of a serpent's poison, Aesch.
2. metaph. "to corrupt, waste", Plat.
II. Pass., the perf. σέσηπα being used in pres. sense for σήπομαι: aor2 ἐσάπην [short α^]:— "to be" or "become rotten, to rot, moulder", of dead bodies, Il.; of timber, Hdt., Il.
2. of live flesh, "to mortify", Hdt., Plat.