איכה ד:טו פירוש: רש״י

Get away. From us, you unclean ones, who are sullied with blood.

For they were obscene. An expression of foulness and filth,²¹Alternatively, ‘they blasphemed.[נצונאצו].’ as in, “its crop מֻרְאָתוֹ with its feathers,”²²Vayikra 1:16. which is translated [by the Targum] as בְּאוּכְלֵיהּ. So did Menachem classify it.

And slithering. They slipped in blood..