Definition

Noun: 1. A file with a circular cross-section; used to file the inside of holes: A round file is a type of tool, specifically a file, which has a cylindrical shape. It is designed to smooth, shape, or enlarge the interior surfaces of circular holes or openings in materials like metal or wood.

Usage

The term "round file" is a compound noun that functions as a single, specific term for a tool. It is used in technical, manufacturing, and crafting contexts. * Example: "To smooth the rough edge inside the pipe, you will need a round file."

Advanced Usage / Idioms

• "To use the round file" (humorous/slang): This is a common euphemism or office joke meaning to discard something by throwing it in the trash can or wastebasket (which is often round). It implies the item is useless or the information is being deliberately ignored or discarded.
  • Example: "That outdated report? I gave it to the round file." (Meaning: I threw it in the trash.)

Variants and Related Words

• File (noun): A general tool with a roughened surface for smoothing or shaping.
• Half-round file (noun): A file that is flat on one side and curved on the other, combining the uses of a flat and a round file.
• Rasp (noun): A coarse file, typically used on wood.

Synonyms

• Rotary file (less common)
• Cylindrical file

Notes on Meaning

The primary and literal meaning of "round file" is the tool. The idiomatic meaning ("the trash") is a humorous extension based on the shape of a traditional wastebasket and is not related to the tool's function.

Noun

1. a file with a circular cross section; used to file the inside of holes