bossstone
nounUK /ˈbɒs.stəʊn/
US /ˈbɔːs.stoʊn/
A bossstone is a big, special stone that sits at the top of a pile.
The children put the shiny bossstone on top of their rock tower.
RELATED WORDS
OTHER MEANINGS
2. A stone carved with a boss, a raised round decoration.
The old church wall had a bossstone with a carved flower.
3. A large stone used as a marker or boundary.
They stopped walking when they reached the bossstone at the field's edge.
4. A stone that holds other stones in place at the top of an arch.
The builder set the bossstone last so the arch would stay strong.