jumpstone

noun
UK /ˈdʒʌmpstəʊn/
US /ˈdʒʌmpstoʊn/

A jumpstone is a flat stone you hop across to cross water without getting wet.

We crossed the stream by stepping on each jumpstone one by one.


OTHER MEANINGS

2. A small raised stone used as a marker or starting point in children's hopping games.

The kids drew a line and took turns leaping from the jumpstone.

3. A stone placed at the edge of a path to help people step up onto higher ground.

She used the jumpstone to climb onto the grassy bank.

4. A flat rock used as a base for jumping during outdoor play or training.

The coach set a jumpstone by the track for the warm-up drills.