coaster
🇺🇸
/ˈkəʊstər/
🇬🇧
/ˈkəʊstə(r)/
A small, flat object placed under a glass to protect the surface of a table.
She grabbed a coaster from the drawer and put it under her drink to prevent a water ring.
A ship that travels along a coast, making stops at different ports.
The coastal trade was booming, and the coasters were busy shuttling goods between ports.