1) Apply putty to 2) Bathtub sealant 3) Calk 4) Certain sealant 5) Crack filler 6) Filler for a gun 7) Fix a leaky joint 8) French word used in English 9) Goop in a gun 10) Make airtight 11) Make leakproof 12) Make watertight 13) Render airtight 14) Seal 15) Seal off 16) Seal up 17) Seal with caulking 1) Seal 2) Sealant 
Oakum and fibers driven between plank seams to make them watertight.
• (v. t. & n.) See Calk.
The application of sealant to a joint, crack or crevice. A compound used for sealing that has minimum joint movement capability; sometimes called low performance sealant. 
To fill a joint with mastic or asphalt cement to prevent leaks.(v) The application of sealant to a joint, crack or crevice. (n) A compound used for sealing that has minimum joint movement capability; sometimes called low performance sealant.
Projection on the bottom of a shoe to give the horse better traction, especially on a wet track.
Caulk transitive verb & noun See Calk . 
(caulking) Sealing material, the process of sealing cracks around doors, windows and other cracks with a caulking gun
Caulk is British navy slang for to sleep, particularly surreptitiously.
Fill in a joint with mastic or cement.
A non-staining, non-hardening putty-like mastic, usually applied to stone joints with a pressure gun.
[v] - seal with caulking
caulking noun a waterproof sealant and filler that is used in building and repair to make watertight