
1) Building block 2) Epitaph place 3) Gravestone 4) Keystone 5) Plot marker
Found on
https://www.crosswordclues.com/clue/headstone

1) Gravestone 2) Tombstone
Found on
https://www.crosswordclues.com/clue/headstone

A headstone, tombstone, or gravestone is a stele or marker, usually stone, that is placed over a grave. They are traditional for burials in the Christian, Jewish and Muslim religions, among others. In most cases they have the deceased`s name, date of birth, and date of death inscribed on them, along with a personal message, or prayer, but they ma....
Found on
http://en.wikipedia.org/wiki/Headstone

• (n.) The stone at the head of a grave. • (n.) The principal stone in a foundation; the chief or corner stone.
Found on
http://thinkexist.com/dictionary/meaning/headstone/
Head'stone` (-stōn`)
noun 1. The principal stone in a foundation; the chief or corner stone.
Ps. cxviii. 22. 2. The stone at the head of a grave.
Found on
http://www.encyclo.co.uk/webster/H/22

A priciple stone, as in keystone or cornerstone.
Found on
http://www.selectstone.com/architectural-resources/stone-glossary/
No exact match found.