Rashi on Numbers 33:52/רש"י על במדבר ל״ג:נ״ב

1והורשתם means, AND YE SHALL DRIVE OUT.

2משכיתם — Understand this as the Targum does: THEIR SPOTS FOR WORSHIP; it is called משכית (connected with the root סכך = סכה “to cover”), because they used to cover the ground with marble stone to prostrate themselves upon it with hands and feet stretched forth, as it is said, (Leviticus 26:1): “And no stone of משכית, covering (no mosaic) shall ye put on your ground to prostrate yourself upon it” (because this is a heathen form of worship).

3מסכיתם — Understand this as the Targum does: their molten gods.