1. a tool with cutting edges used to enlarge or smooth holes

Examples

• The machinist used a reamer to create a precise hole in the metal plate.
• She selected the correct size reamer for the job.
• The reamer smoothed the rough edges of the drilled hole.
• He carefully inserted the reamer into the pilot hole.
• The workshop had various reamers for different hole sizes.
• A sharp reamer produces cleaner cuts than a dull one.