caulk
noun [ U ] UK uk/kɔːk/ us/kɑːk/ (US calk)
填隙物
a substance used for filling in the gaps around the edge of something, for example a bath or shower
caulk
verb [ T ] UK /kɔːk/ us/kɑːk/ (US calk)
捻缝，填隙
to fill the gaps around the edge of something, for example a bath or shower, with a special substance