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caulk

1 ENTRIES FOUND:
caulk /ˈkɑːk/ verb
caulks; caulked; caulking
caulk
/ˈkɑːk/
verb
caulks; caulked; caulking
Britannica Dictionary definition of CAULK
[+ object]
: to fill the cracks or holes in (something) with a substance that keeps out water

— caulk

noun [noncount]