σέριφον
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
τό, a kind of A wormwood, = σαντονικόν (q.v.), Dsc.Prooem. 8, Id.3.23, Gal.11.804. II γραῦς σέριφος or σερίφη, an insect, = μάντις 11, a name used for an old maid, Zen.2.94, Suid.