LSJ
or σταίς (not στᾷς), τό, gen. σταιτός, flour of spelt mixed and made into dough, Hdt. 2.36, Hp. Art. 38, Arist. Mete. 386b14, Pr. 927b23, Thphr. Od. 51, LXX Ex. 12.34; εἰ μὴ κόρη δεύσειε τὸ σ. Eup. 332; also of dough in general, Gal. 6.482, 510, 597. = στέαρ, ὄϊος σταῖς dub.l. in Hp. Nat. Mul. 103 (οἰσύπην Littré); ἐν σταιτὶ τρίβειν Id. Mul. 1.84 (perh. in sense 1).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
flour of spelt mixed and made into dough , [Herdotus Historicus (Refs 5th c.BC)] (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