θύλακος
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
[ῡ], ὁ,
A sack, esp. to carry meal in, Hdt.3.46; ἄλφιτ' οὐκ ἔνεστιν ἐν τῷ θυλάκῳ Ar.Pl.763; θ. δορκαδέων ἀστραγάλων PCair.Zen. 69.18 (iii B.C.); δερῶ σε θύλακον I'll make a bag of your skin, Ar.Eq. 370; contemptuous word for a garment, ὁ Τηλαύγους θ. prob. in Aeschin.Socr.42: metaph., of a person, θ. τις λόγων 'wind-bag', Pl.Tht.161a; τῇ χειρὶ δεῖν σπείρειν, ἀλλὰ μὴ ὅλῳ τῷ θ. Corinn. ap. Plu. 2.348a. 2 sack in which the eggs of the tunny are enveloped, Arist. HA571a14, cf. 552b19. II in pl., slang term for the loose trousers of Persians and other Orientals, E.Cyc.182, Ar.V.1087. III ball used for physical exercise, Antyll. ap. Orib.6.32.12.
German (Pape)
[Seite 1222] ὁ, Sack, Beutel, bes. Brotsack; ἀλφίτων Her. 3, 46; Ar. Plut. 763; Ath. XI, 499 c; übertr., λόγων Plat. Theaet. 161 a. Von der Aehnlichkeit, die weiten Hosen der Barbaren, Ar. Vesp. 1087, Schol. εἴδη βρακίων παρὰ Πέρσαις; vgl. Eur. Cycl. 181. [Bei Greg. Naz. (VIII,166) mit kurzem υ.]