caulking \caulk"ing\ n.
   1. the process of sealing cracks and crevices with a filler
      such as caulk2.
      wordnet 1.5

   2. same as caulk2, n..
      pjc
see also:
caulk2 

caulk \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
see also:
calk calk caulking