Or bashmuwrah {ash-moo-raw'}; or -ashmoreth {ash-mo'-reth}; (feminine) from shamar; a night watch -- watch.
see HEBREW shamar
H821. ashmoreth
or ashmurah אַשְׁמֹ֫רֶת אַשְׁמוּרָה, noun feminine watch (division of time); — absolute בֳּלּ֑יְלָה אַשְׁמוּרָה Psalm 90:4; הַתִּיכוֺנָה אַשְׁמֹרֶת ראֹשׁ Judges 7:19; construct הַבֹּקֶר אַשְׁמֹרֶת Exodus 14:24 (J), 1 Samuel 11:11; plural absolute אַשְׁמֻרוֺת Lam 19:19; Psalm 63:7; 119:148.