penknife (also `pocket-knife)

n (pl -knives) small knife with one or more blades that fold down into the handle, usu carried in the pocket 小摺刀. =>illus at knife 见knife插图.

pendulum, penetrability, penetrable, penetrate, penetrating, penetratingly, penetration, penetrative, penguin, penholder, penicillin, peninsula, peninsular, penis, penitence, penitent, penitential, penitentially, penitentiary, penitently, penmanship, pennant, penniless, pennon, pennorth, Pennsylvania, penny, penny farthing, penny whistle, penny-pincher, pennyweight, pennyworth, penology, pension, pensionable, pensioner, pensive, pensively, pensiveness, pent up,