Bailly
ou τροῦλα, ης (ἡ) = lat. trulla :
1 truelle, NICOL. MYREPS. 9, 70 ;
2 sorte de mesure, OLYMPIOD. (PHOT. Bibl. p. 60, 32).
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LSJ
ἡ, ladle or cup, used as a liquid measure, Lat. trulla, BMus.Inscr. 980 (Cyprus), Olymp. Hist. p. 462 D., Gloss. ; written τροῦλα in Hippiatr. 77; — Dim. τρούλλιον, τό, Lat. trulleum, Hero Spir. 1.8, Aët. 3.177, 16.136; written τρούλιον in BGU 814.10 (iii AD), Hippiatr. 74; cf. τρύλλιον.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)