LSJ
ἡ, a man΄s pack, baggage, αὐτόφορτος οἰκεία σαγῇ, i.e. carrying his own baggage, etc., A. Ch. 675; scrip, wallet, knapsack, Ion Trag. 7; then, generally, harness, furniture, equipment, παντελῆ σαγὴν ἔχων A. Ch. 560, cf. E. Rh. 207; τοξήρης σ. Id. HF 188; esp.
armour, harness, S. Fr. 1092 (prob.), cf. Ar. Fr. 848, Men. 1061, LXX 2 Ma. 3.25; also in pl., φεράσπιδες σαγαί A. Pers. 240 (troch.), cf. Th. 125 (lyr.), 391. later, = σάγμα II, pack-saddle, PGoodsp. Cair. 30 xxxviii 16 (ii AD), Babr. 7.12, Poll. 1.185, 10.54; καμήλου J. AJ 1.19.10; also the padding of a saddle, Str. 15.1.20. (From σάττω ; hence πανσαγία or πασσαγία. — On the accent, v. Hdn. Gr. 1.309.)
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
1. a man's pack, baggage , αὐτόφορτος οἰκείᾳ σαγῇ, i. e. carrying his own baggage, [Aeschulus Tragicus (6th/5th c.BC)]: generally, harness, equipment , [Aeschulus Tragicus (6th/5th c.BC), Euripides (Refs 5th c.BC)]
2. = σάγμα II, a pack-saddle , [Babrius Fabularum Scriptor (Refs 2nd c.AD)] (ML)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars