ἠθμός · ēthmos — LSJ
strainer, colander, Schwyzer l.c., E. Fr. 374, IG 2(2).1416.11, 4.39.20, Gal. Nat.Fac. 1.15; esp. wine-strainer, Pherecr. 41; part of an eel-trap, Arist. HA 534a22; of the eyelashes, X. Mem. 1.4.6; prov., τῷ ἠθμῷ ἀντλεῖν, of fruitless toil, Arist. Oec. 1344b25.
ἠ. σχοίνινος,= κημός III, Cratin. 132, cf. AP 9.482.23 (Agath.).
sluice or weir (?), IG ΙΙ(2).287 A 75 (Delos, iii B.C.).