12-letter words containing f, r, i, n, k
- tank fighter — a boxer known for false shows of being knocked down or out in bouts the results of which have been prearranged.
- trefoil knot — a knot having the form of a trefoil.
- trench knife — a short knife for stabbing, sometimes equipped with brass knuckles as a guard, used in modern warfare in hand-to-hand combat.
- walking fern — a fern, Camptosorus rhizophyllus, having simple, triangular fronds tapering into a prolongation that bends at the top and often takes root at the apex.