v.
Variant: or calk
Pronunciation: ' ko ̇ k
Function: transitive verb
Etymology: Middle English caulken, from Anglo-French cauker, calcher, chalcher to trample, from Latin calcare, from calc-, calx heel
Date: 15th century
: to stop up and make tight against leakage (as a boat or its seams, the cracks in a window frame, or the joints of a pipe)
– caulk · er noun