GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Caulk (?), v. t.
   1. See Calk, v..
   
   [1913 Webster]
   
   
   2. to fill in the seams or cracks of, with a waterproof material such as caulk.
   
   [PJC]
   
   
         
       

2.       
   Caulk (?), n.
   1. See Calk.
   
   [1913 Webster]
   
   
   2. a viscous semisolid material of varying composition used to fill in seams of objects which are exposed to water, such as wooden ships or bath tiles; -- called also calk and caulking.  After applying in a semisolid form, the material hardens and dries to form a waterproof seal.  It is used in the process of caulking.  It is sometimes applied together with a rope-like cord to fill larger seams.
   
   [PJC]