TgJ Is29:3 :וְאַשרֵי עְלַך מַשרְיָן וְאַבנֵי עְלָך כַרקוֹם וְאַצבוֹר עְלַך מִלֵיתָא‏ : I shall build siege works against you and pile up a glacis against you
See the entire entry for krkwm n.m. siege works