headstone

head +‎ stone

headstone (plural headstones)

1. A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.
   • 2020, Akwaeke Emezi, The Death of Vivek Oji, Faber & Faber Ltd, page 227:

     He called the contractor and ordered a replacement headstone with a new inscription.

2. The cornerstone or principal stone of a building.

• footstone
• menhir
• through-stone

• head notes, head-notes, headnotes, noteheads, stonehead