doorstone

== English == === Etymology === From door +‎ stone. === Noun === doorstone (plural doorstones) (dated) The stone forming a threshold; a doorstep. === References === “doorstone”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. === Anagrams === oreodonts, sonotrode