πίασμα
From LSJ
English (LSJ)
[ῑ] (A), ατος, τό, (πιαίνω)
A that which makes fat, of a river, π. Βοιωτῶν χθονί bringing fatness and riches to... A.Pers.806.
πίασμα [ῐ] (B), ατος, τό, Dor. and later Gr. for πίεσμα (q.v.).
German (Pape)
[Seite 612] τό, dor. statt πίεσμα, δακτύλου Eubul. bei Ath. III, 108 c. τό, das, was fett, fruchtbar macht, Dung, πεδίον Ἀσωπὸς ἄρδει, φίλον πίασμα Βοιωτῶν χθονί, Aesch. Pers. 792.