Likewise in the Synagoge (sigma244) and Photius' Lexicon (sigma599 Theodoridis), and cf. Hesychius sigma1959. The spelling of the headword as strago/s is peculiar to these lexica; the regular form is straggo/s. See generally LSJ s.v. at web address 1.
As to sense, particularly noteworthy is the medical meaning relating to complicated and irregular diseases: cf. Rufus in Oribasius 8.24.30 and Cassius, Problemata 14. This meaning can be related to the use of the adjective du/skolos -- the fourth of the present glosses -- within the medical corpus of Hippocrates (cf. Coan Prognoses 1.3).
See also sigma 1161; and more generally sigma 1157, sigma 1158, sigma 1159, sigma 1162, sigma 1163.
[1] cf. iota 736.