reamer

noun

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.

noun

1. a steel tool with a cylindrical or tapered shank around which longitudinal teeth are ground, used for smoothing the bores of holes accurately to size
2. US a utensil with a conical projection used for extracting juice from citrus fruits; lemon squeezer

n.

1. A rotating tool used to shape or enlarge holes.