D defs.my
Entry 2 senses Webster, 1913

Headstone

/(-stōn`)/ · Head·stone · IPA /ˈhɛdstoʊn/
01 n. The principal stone in a foundation; the chief or corner stone.
  1. 1.
    The principal stone in a foundation; the chief or corner stone.
  2. 2.
    The stone at the head of a grave.