doorstep(n = noun.artifact) doorsill, threshold - 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, n. & v.
--n.
1 a step leading up to the outer door of a house etc.
2 sl. a thick slice of bread.
--v.intr. (-stepped, -stepping) go from door to door selling, canvassing, etc.