φηγός
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)
Dor. φᾱγός Theoc.9.20, ἡ,
A = δρῦς ἀγρία, Valonia oak, Quercus Aegilops, Thphr.HP3.3.1, 3.8.2, etc.: freq. in Il.(not in Od.), Διὸς περικαλλέϊ φηγῷ Il.5.693; φηγῷ ἐφ' ὑψηλῆ . . Διός 7.60; ἡ παλαιὰ φ., of the oak of Dodona, S.Tr.171, cf. Hes.Frr.134.7, 212 (but δρῦς S.Tr.1168). II acorn of the same tree, Ar.Pax1137 (lyr.), Pl.R. 372c, Theoc. l.c., D.Chr.6.62. (Cf. Lat. fāgus 'beech', OE. bóc 'beech'.)