ה֤וֹלֵ֥ךְ אַחֲרֶ֗יהָ פִּ֫תְאֹ֥ם כְּ֭שׁוֹר אֶל־טָ֣בַח יָב֑וֹא וּ֝כְעֶ֗כֶס אֶל־מוּסַ֥ר אֱוִֽיל׃
소년이 곧 그를 따랐으니 소가 푸주로 가는 것 같고 미련한 자가 벌을 받으려고 쇠사슬에 매이러 가는 것과 일반이라
Rashi
and with their feet they spout venom When they would pass in the street near Jewish youths, they would stamp their feet and hint to them of the affection of the adulteresses, in order to arouse their temptation, like the venom of a serpent. עֶכֶס is the venom of a serpent.