pocket-knife

n (pl -knives) = penknife (pen1). =>illus at knife 见knife插图.

plutocrat, plutocratic, plutonium, ply, plywood, PM, PMT, pneumatic, pneumatically, pneumonia, PO, po-faced, poach, poacher, POB, pock, pock-marked, pocked, pocket, pocket-book, pocket-money, pocketful, pod, podginess, podgy, podiatrist, podiatry, podium, poem, poet, Poet Laureate (also Laureate), poetess, poetic, poetic justice, poetic licence, poetical, poetically, poetry, pogo, pogrom,