Definition: a short knife with a pointed blade used for piercing or stabbing
Main entry: poser, toughie, sticker, stumper
Definition: a particularly difficult or baffling question or problem
Main entry: paster, sticker, gummed label
Definition: an adhesive label
Main entry: spikelet, spine, pricker, prickle, thorn, sticker
Definition: a small sharp-pointed tip resembling a spike on a stem or leaf