caulk

caulk also calk  (kôk)

v. caulked also calked, caulk·ing also calk·ing, caulks also calks

v.tr.

1. To make watertight or airtight by filling or sealing: caulk a pipe joint; caulked the cracks between the boards with mud.

2. Nautical To make (a boat) watertight by packing seams with a waterproof material, such as oakum or pitch.

v.intr.

To apply caulking: caulked all around the window frame.

n.

Caulking.

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[Middle English cauken, to press, from Old North French cauquer, from Latin calcre, to tread, from calx, heel.]

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caulker n.

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caulk

Verb

to fill in (cracks) with paste or some other material [Latin calcare to trample]

Thesaurus

Noun	1.	caulk - a waterproof filler and sealant that is used in building and repair to make watertight caulking 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)
Verb	1.	caulk - seal with caulking; "caulk the window" calk seal, seal off - make tight; secure against leakage; "seal the windows"