puzzle

n.难题，谜 vt.使迷惑，使困惑

put-up job, put-upon, put...down as, put...in force, put...into practice, put...on record, put...to use, put/bring into operation, putative, putrefaction, putrefy, putrescence, putrescent, putrid, putsch, putt, puttee, putter, putting-green, putty, puzzled, puzzlement, puzzler, puzzling, PVC, Pvt, PW, PX, pygmy (also pigmy), pyjama (US pajama), pyjamas, pyjamas (also esp US pajamas), pylon, pyorrhoea (also esp US pyorrhea), pyramid, pyramid selling, pyramidal, pyre, Pyrex, pyrites,