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

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

arch barrow boundary stone brass bust cairn cenotaph column cornerstone cromlech cross cup cyclolith dolmen first stone footstone foundation stone grave gravestone hoarstone inscription keystone ledger marker mausoleum megalith memento memorial memorial arch memorial column memorial statue memorial stone menhir monolith monument mound necrology obelisk obituary pillar plaque prize pyramid quoin reliquary remembrance ribbon rostral column shaft shrine stela stone stupa tablet testimonial tomb tombstone tope trophy