knapsack

n (dated 旧) = rucksack.

kith, kitsch, kitten, kittenish, kitty, Kituro, Kivu, kiwi, kiwi fruit, KKK, klaxon, Kleenex, kleptomania, kleptomaniac, km, kn, knack, knacker, knacker's yard, knackered, knave, knavery, knavish, knavishly, knead, knee, knee-breeches, knee-deep, knee-high, knee-jerk, knee-length, kneecap, kneecapping, kneel, kneel down, knees-up, knell, knew, knick-knack (also nick-nack), knickerbockers,