Probably from the same as battah; a bath or Hebrew measure (as a means of division) of liquids -- bath.
see HEBREW battah
H1324. bath
II. בַּת bath (a measure), בָּתָה see below בתת.
II. בַּת noun masculineEzekiel 45:14 (feminineIsaiah 5:10) bath (Thes and others from above √ in sense of define, measure; compare τέμνω; LagOr. ii. 10 f. makes = בדת, = בד + feminine ת; compare Syriac , instrument for pressing olives; compare Epiphanius βάδος = ἐλαιοτριβεῖον; & βάδος also Hesychius JosAnt. viii. 2. 9 but ed. Niese βάτους, βάτος — ׳בּ absolute 5:10 6t.; (בָּ֑ת Ezekiel 45:11) construct 45:10; plural בַּתִּים2 Chronicles 2:9 (twice in verse) + 3t.; — a liquid measure = אֵיפָה of dry measure, each being 1/10 חֹמֶר (q. v.) Ezekiel 45:11 (twice in verse); 45:14 (twice in verse); also Isaiah 5:10; 1 Kings 7:26, 38; 2 Chronicles 2:9 (twice in verse); 4:5 + Ezekiel 45:14 (twice in verse) (4 t. in this see, Co strike out a & d). 45:10 בַּתצֶֿדֶק a righteous (right, accurate, full) bath ("" אֵיפַתצֶֿדֶק). The actual size of bath (= ephah) is apparentlyapproximately 40 litres (= Attic metretes compare JosAnt. viii. 2. 9; = 39.39 lit. compare BoeckhMetrol. Untersuch. 259 f.; see also J. BrandisMünz- Mass- u. Gewichtswesen 29 f. SmithDict. Bible, article Weights & Measures RiHWB 934 f.). — 1. בַּת see below בֵּן.