doorstep (Noun) — The sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway.
doorstep (Noun) — Thick bread slice.
doorstep (Noun) — One's immediate neighbourhood. ex. "she lives on your doorstep"
doorstep (Verb) — Catch someone for an unexpected interview by waiting outside their house.