caulking; caulked; caulks

Caulk is a sealant. It comes in a tube and is used commonly by plumbers and carpenters trying to seal up cracks where air or water might push through. When a plumber caulks a tub, he's applying caulk to its seams to make it watertight.

Caulk can be used to describe both the process of applying caulk and the sealant itself. The word caulk comes from the Old Northern French cauquer, meaning "to press down." After you lay the caulk down over the seam you press it down by either running your finger over it or using a specific tool to force the caulk to settle into the hole you're trying to cover.

Definitions of caulk
  1. noun
    a waterproof filler and sealant that is used in building and repair to make watertight
    synonyms: caulking
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    type of:
    sealant, sealer
    a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface)
  2. verb
    seal with caulking
    caulk the window”
    synonyms: calk
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    type of:
    seal, seal off
    make tight; secure against leakage
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘caulk'. Views expressed in the examples do not represent the opinion of or its editors. Send us feedback
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