Caulking

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Caulking

The process of making a joint watertight; includes mastics, rubber, silicone and other flexible sealants.

caulking, calking

1.A resilient mastic compound, often having a silicone, bituminous, or rubber base; used to seal cracks, fill joints, prevent leakage, and/or provide waterproofing; also see caulking compound.
2. Another term for cogging.