Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ălăbarches and ălăbarchĭa, ae, v. arabarches, arabarchia.
ărăbarchīa (not ălăb-; v. arabarches), ae, f., a kind of customs in Egypt, Cod. Just. 4, 61, 9.