marl.

An earthy mixture containing substantial carbonate minerals and clay.

Use it for

Words that belong together

• marl bed
• clayey marl

On the page

A pale bed of marl crumbled beneath the cliff.

The trench exposed marl below the darker soil.

Usage notes

Primary category: environment. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.