μύστρον
From LSJ
Λάλει τὰ μέτρια, μὴ λάλει δ', ἃ μή σε δεῖ → Modestus sermo, et qualis deceat, sit tuus → Sprich maßvoll, spricht nicht aus, was unanständig ist
English (LSJ)
τό,
A = μυστίλη, Nic.Fr.68.8, cf. Ath.3.126a. 2 spoon, Hippoloch. ap. eund.4.129c, Dsc.3.22, POxy.921.25 (iii A. D.), etc.; μύστρου πλῆθος spoonful, as a dose, Archig. ap. Orib.8.2.28, Herod. Med. ap. eund.8.3.2; μ. alone, as a measure, Gal.13.57, 19.770, Hippiatr.Append.p.446.