keepsake – Anything kept or given to be kept for the sake of the giver.
kerchief – A square of linen, silk, or other material, used as a covering for the head or neck.
kernel – A grain or seed.
kiln – An oven or furnace for baking, burning, or drying industrial products.
kiloliter – One thousand liters.
kilometer – A length of 1,000 meters.
kilowatt – One thousand watts.
kimono – A loose robe, fastening with a sash, the principal outer garment in Japan.
kind-hearted – Having a kind and sympathetic nature.
kingling – A petty king.
kingship – Royal state.
kinsfolk – pl. Relatives.
knavery – Deceitfulness in dealing.
knead – To mix and work into a homogeneous mass, especially with the hands.
knickknack – A small article, more for ornament that use.
knight errant – One of the wandering knights who in the middle ages went forth in search of adventure.