Webster's Collaborative New Word Dictionary - K
Kannywood (n.): the nigerian Hausa-language film industry, based in Kano; Kano regarded as the centre of this industry.
kibitz (n.): a spectator of a game, esp. of cards.
K-leg (n.): in singular and plural. A condition in which one or both of a person's knees are turned inwards, resulting in a noticeable gap between the feet.
kvetching (adj.): characterized complaining or criticizing; that complains or criticizes.
kvetchy (adj.): given to or characterized by complaining or criticizing; ill-tempered, irritable.