Définitions
1.AdjectiveNot suited, not fit (for something).
2.AdjectiveNot customized, tailored or cut to fit.
3.AdjectiveOf trains, or wagons in the train, not having a through brake pipe, or brakes on the wagons that can be operated from the locomotive (the wagons did have handbrakes however).
4.Verbsimple past and past participle of unfit.