'Sin offerings' in the Bible

In the door porch, there stood on either side two tables for the slaughtering; to slay the burnt offerings, sin offerings, and trespass offerings thereupon.

Then said he unto me, "The chambers toward the north and the south which stand before the back building: those be holy habitations, wherein the priests that do service before the LORD must eat the most holy offerings. And there must they lay the most holy offerings: meat offerings, sin offerings and the trespass offerings, for it is a holy place.

Then said he unto me, "This is the place, where the priests shall seethe the trespass and sin offerings, and bake the meat offerings: that they need not bear them in to the outward court, and so to unhallow the people."