plural coasters
plural coasters
Learner's definition of COASTER
[count]
1
: a small, flat object on which a glass, cup, or dish is placed to protect the surface of a table杯垫;垫子 3
: a ship that sails along a coast or that is used in trade between ports of the same country沿海岸航行的船;(国内港口间的)商船