Webster's Revised Unabridged Dictionary · 1913

Calk

Calk (kak) , transitive verb

[Either corrupted from French calfater (compare Portuguese calafetar, Sp. calafetear), from Arabic qalafa to fill up crevices with the fibers of palm tree or moss; or from Old English cauken to tred, through the French from Latin calcare, from calx heel. Compare Calk to copy, Inculcate.]

1.
To drive tarred oakum into the seams between the planks of (a ship, boat, etc.), to prevent leaking. The calking is completed by smearing the seams with melted pitch.
2.
To make an indentation in the edge of a metal plate, as along a seam in a steam boiler or an iron ship, to force the edge of the upper plate hard against the lower and so fill the crevice.

Calk (kalk) , transitive verb

[English calquer to trace, Italian caicare to trace, to trample, from Latin calcare to trample, from calx heel. Compare Calcarate.]

To copy, as a drawing, by rubbing the back of it with red or black chalk, and then passing a blunt style or needle over the lines, so as to leave a tracing on the paper or other thing against which it is laid or held.

Calk (kak) , noun

[Compare Anglo-Saxon calc shoe, hoof, Latin calx, calcis, heel, calcar, spur.]

1.
A sharp-pointed piece of iron or steel projecting downward on the shoe of a horse or an ox, to prevent the animal from slipping; -- called also calker, calkin.
2.
An instrument with sharp points, worn on the sole of a shoe or boot, to prevent slipping.
3.
same as caulk, n..

Calk (kak) , intransitive verb

1.
To furnish with calks, to prevent slipping on ice; as, to calk the shoes of a horse or an ox.
2.
To wound with a calk; as when a horse injures a leg or a foot with a calk on one of the other feet.
3.
same as caulk, transitive verb.