headstone

n. tombstone, gravestone, grave marker

A headstone, tombstone or gravestone is a permanent marker, normally carved from stone, placed over or next to the site of a burial in a cemetery or elsewhere.
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Noun
1. the central building block at the top of an arch or vault
(synonym) keystone, key
(hypernym) building block
(hyponym) quoin, coign, coigne
(part-holonym) arch
2. a stone that is used to mark a grave
(synonym) gravestone, tombstone
(hypernym) stone
(part-holonym) grave, tomb

(n.)
The stone at the head of a grave.
  

(n.)
The principal stone in a foundation; the chief or corner stone.
  

n.
1.
بنياد کا پتھر, سنگ بنياد
2.
قبر کي تختي, لوح مزار