What does k stand for?

Kilometer

A metric measurement of length equal to 0.6214 mi.

Knot

One nautical mile per hour (1.852 km/h, 0.5144 m/s).

Papua New Guinean kina

Myanma kyat

Contract

A legal document or agreement, enforceable by law, between two or more parties for the doing of something specified, such as the building or furnishing materials.OR Building contracts may legally be formed verbally. Usually however a written contract should be used. There are various standard forms of contract, such as those provided by the Joint Contracts Tribunal and the various engineering institutions.

Kelvin (absolute temperature scale)

Kilo-

Knit

Kraft

Kerotin