Or (shortened) chamoth {kham-oth'}; feminine of cham; a mother-in-law -- mother in law.
see HEBREW cham
H2545. chamoth
[חָמוֺת] noun feminine husband's mother (Late Hebrew חָמוֺת, Aramaic חֲמָתָא; Arabic husband's mother; Assyrian êmêtu, ZimBP 48; Ethiopic ) — only suffix חֲמוֺתֵךְ Ruth 2:11; 3:17; חֲמוֺתָהּ 1:14 7t.; חֲמֹתָהּ Micah 7:6; — of Naomi Ruth 1:14; 2:11, 18, 19 (twice in verse); 2:23; 3:1, 6, 16, 17; בַּחֲמֹתָהּ כַּלָּה בְאִמָּ֔הּ קָמָ֫ה בַּת Micah 7:6.