Feminine participle of yabam; a sister-in-law -- brother's wife, sister in law.
see HEBREW yabam
H2994. yebemeth
[יְבֵ֫מֶת] noun feminine sister-in-law (Late Hebrew יְבִּימְתָּא יְבַמְתָּא, ᵑ7 יְבָמָה,; Syriac ) — only suffix יְבִמְתּו Deuteronomy 25:7 (twice in verse); 25:9 his brother's wife (widow), (compare Genesis 38:8) in levirate law; יְבִמְתֵּךְ Ruth 1:15 (twice in verse) thy husband's brother's wife.