The words sti/xos and ta/cis have multiple meanings but coincide in the military sphere with the sense of a row or file of soldiers; see already sigma 1115.
This entry derives from the Synagoge sigma231 (Cunningham), which was also the source for Photius, Lexicon sigma567 Theodoridis (Porson 539.11). See similarly Hesychius sigma1881. The headword recurs in another context at sigma 1124.