σίναπι
εἰ γάρ κεν καὶ σμικρὸν ἐπὶ σμικρῷ καταθεῖο καὶ θαμὰ τοῦτ᾽ ἔρδοις, τάχα κεν μέγα καὶ τὸ γένοιτο → for if you add only a little to a little and do this often, soon that little will become great (Hesiod W&D, 361-362)
English (LSJ)
τό, Anaxipp.1.45, PFay.122.4,12 (i/ii A.D.); gen. εως PTeb.9.13 (ii B.C.), Ev.Matt.13.31, POxy.920.2 (ii/iii A.D.), Alex.Trall.1.12; ιος PMich.Zen.72.9 (iii B.C.), PStrassb.102.9 (iii A.D.); ις PLond.2.453.6 (iv A.D.); dat. ι PFlor.20.21 (ii A.D.); also σίνᾱπυ, Diocl. Fr.120, PCair.Zen.608.31, 703.12 (iii B.C.); gen. υος Sor.2.15 cod.; σίνηπι, Archig. ap. Gal.12.813, Crito ib.817, Dsc.2.154, Artem.5.5, etc.; gen. εως Asclep. ap. Gal.13.248, Dsc.1.38, PLips.97 xxxiii 4 (iv A.D.), etc.; ιος Aret.CD1.2, v.l. in Polyaen.4.3.32, etc.; σίνηπυ, Nic. Fr.84, Dsc.Eup.1.14; also σίνηπυς, acc. υν, ὁ, Nic.Al.533, and σίνᾱπις, ἡ, Herod.Med.in Rh.Mus.58.88:—
A mustard, Sinapis alba:—in early Att. and Ion. none of these forms appear, but νᾶπυ, Hp.Vict.2.54, Morb.3.15, Mul.1.13, cf.Ath.9.367a, Phryn.255. II σίνηπι ἄγριον or Περσικόν,= θλάσπι, Ps.-Dsc.2.156. III σ. κηπαῖον, Brassica nigra, ib.154.