[ kɔ:k ]
( US also calk )
■ noun a waterproof filler and sealant, used in building work and repairs.
■ verb
1》 seal with ~.
2》 make (a boat or its seams) watertight.
Derivatives
~er noun
Origin
ME (in the sense 'copulate', used of birds): from Old North. Fr. cauquer , caukier , var. of cauchier 'tread, press with force', from L. calcare 'tread', from calx , calc- 'heel'.