# coulter

/ˈkoʊɫtɝ/ (US) · /kˈəʊltɐ/ (UK) · CEFR C2 · Noun

Source: https://englishreference.com/word/coulter
Updated: 2026-08-15

## Definition

a sharp blade or wheel on a plow that cuts into the soil. It makes a vertical cut in front of the main plow blade to help turn the earth over smoothly.

For teachers: a vertical blade or disc attached to the beam of a plough, designed to make a preliminary cut in the turf or soil ahead of the ploughshare.

## Examples

- The farmer checked the coulter for rust before starting the spring plowing.
- A sharp coulter is essential for cutting through thick grass roots when breaking new ground for a garden.
- The efficiency of the entire plowing operation depends on the precise alignment of the coulter, which ensures a clean furrow wall and reduces the draft required by the tractor.

## Usage notes

- Primarily used in agricultural and technical contexts; often paired with 'disc' or 'knife' to specify the type.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.