οὐλοφόνον
From LSJ
καὶ τὸ σιγᾶν πολλάκις ἐστὶ σοφώτατον ἀνθρώπῳ νοῆσαι → and silence is often the wisest thing for a man to heed, and often is man's best wisdom to be silent, and often keeping silent is the wisest thing for a man to heed
English (LSJ)
τό, a plant, = χαμαιλέων μέλας (black chameleon, Cardopatium corymbosum), Dsc.3.9, cf. Nic.Al. 280 (v.l.).