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marl

1 American  
[mahrl] / mɑrl /

noun

  1. Geology. a friable earthy deposit consisting of clay and calcium carbonate, used especially as a fertilizer for soils deficient in lime.

  2. Archaic. earth.


verb (used with object)

  1. to fertilize with marl.

marl 2 American  
[mahrl] / mɑrl /

verb (used with object)

Nautical.
  1. to wind (a rope) with marline, every turn being secured by a hitch.


marl 1 British  
/ mɑːˈleɪʃəs, mɑːl /

noun

  1. a fine-grained sedimentary rock consisting of clay minerals, calcite or aragonite, and silt: used as a fertilizer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to fertilize (land) with marl

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
marl 2 British  
/ mɑːl /

verb

  1. nautical to seize (a rope) with marline, using a hitch at each turn

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

marl Scientific  
/ märl /
  1. A crumbly mixture of clays, calcium and magnesium carbonates, and remnants of shells that forms in both freshwater and marine environments.


Other Word Forms

Etymology

Origin of marl1

1325–75; Middle English marle < Middle Dutch < Old French < Medieval Latin margila, diminutive of Latin marga, said to be < Gaulish

Origin of marl2

1400–50; late Middle English marlyn to ensnare; akin to Old English mārels cable. See moor 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

South Jersey achieved paleontological renown with the 1858 discovery of a nearly complete skeleton of the duck-billed dinosaur Hadrosaurus foulkii in a Haddonfield marl pit.

From The Wall Street Journal • Apr. 2, 2025

Mineral-driven and intense, it reflects the flint, limestone and marl soils of Pouilly-Fumé in the Loire Valley.

From Washington Post • Jul. 14, 2022

The marl cliffs, which attract thousands of tourists every year, were defaced sometime overnight on Friday.

From BBC • Jan. 9, 2022

The coat is available in only one color – grey marl.

From Fox News • Nov. 26, 2021

Agriculture and Industries.—The soil is generally marl and clay, but in various parts contains calcareous earth in mixed proportions.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3 "Helmont, Jean" to "Hernosand" by Various

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