Reamer
['riːmə(r)] or ['rimɚ]
Definition
(noun.) a drill that is used to shape or enlarge holes.
(noun.) a squeezer with a conical ridged center that is used for squeezing juice from citrus fruit.
Edited by Alta--From WordNet
Definition
(n.) One who, or that which, reams; specifically, an instrument with cutting or scraping edges, used, with a twisting motion, for enlarging a round hole, as the bore of a cannon, etc.
Checker: Max