pinprick

n thing that is annoying although small or unimportant 令人烦恼的小事或不重要的事.

pine, pine-cone, pine-needle, pineal, pineal gland, pineapple, ping, ping-pong, pinion, pink, pink gin, pink-eye, pinkie (also pinky), pinking shears (also pinking scissors), pinkish, pinnace, pinnacle, pinnate, pinny, pinpoint, pins and needles, pint, pint-sized, pinto, pioneer, pioneering, pious, piously, piousness, pip, pip-squeak, pipal (also peepul), pipe, pipe-cleaner, pipe-dream, pipeclay, pipeline, piper, pipette, piping,