Pronunciation: (rē'mur),[key] —n. 1. any of various rotary tools, with helical or straight flutes, for finishing or enlarging holes drilled in metal.
2. any bladelike pick or rod used for scraping, shaping, or enlarging a hole: a pipe reamer. 3. a kitchen utensil for extracting and collecting juice from fruits, having a deep saucerlike base and in the center a grooved cone on which the fruit half is pressed down by hand.
4. Dentistry.a drill with a spiral blade, for enlarging root canals.