σίλφη
From LSJ
English (LSJ)
ἡ,
A cockroach, Blatta germanica, Arist.HA601a3, Gal.12.366,641, Ael.NA1.37, Luc.Gall.31; also, book-worm, Id.Ind.17 (in form τίλφη), AP9.251 (Even.). II a kind of boat, Sch.Ar.Pax 143, Suid. (acc. to Phryn.268, τίφη (q.v.) is the correct form).