ἐφέδρα
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
Ion, ἐπέδρη, ἡ,
A sitting by or before a place: hence, siege, blockade, Hdt.1.17; ἐπέδρην ποιήσασθαι Id.5.65; observation of a besieged place, Ath.Mech.18.14 (pl.). 2 sitting upon, Pl.Plt. 288a. II stable, Phleg.Mir.3. 2 base, Hero Spir.1.30. 3 surface of a threshold, Rev.Phil.44.249 (Didyma, ii B.C.). III a plant, = ἵππουρις, Hsch., Plin.HN26.36, Ps.-Dsc.4.46.