scalpellus
From LSJ
τὸ γὰρ βραχύ τι τοῦτο πᾶσαν ὑμῶν ἔχει τὴν βεβαίωσιν καὶ πεῖραν τῆς γνώμης → this trifle contains the whole seal and trial of your resolution
Latin > English
scalpellus scalpelli N M :: scalpel, lancet; small surgical knife; similiar tool used in grafting
Latin > French (Gaffiot 2016)
scalpellus, ī, m., c. scalpellum : Cels. Med. 2, 10.