וַיֹּ֙אמֶר֙ זֹ֣את הָרִשְׁעָ֔ה וַיַּשְׁלֵ֥ךְ אֹתָ֖הּ אֶל־תּ֣וֹךְ הָֽאֵיפָ֑ה וַיַּשְׁלֵ֛ךְ אֶת־אֶ֥בֶן הָעֹפֶ֖רֶת אֶל־פִּֽיהָ׃ (ס)
And he said: ‘This is Wickedness.’ And he cast her down into the midst of the measure, and he cast the weight of lead upon the mouth thereof.
Read Kabbalistic (mystical) interpretations of Zechariah 5:8: Zohar and classical Jewish mystical sources, free online.