Definition of maerl in English:

maerl

(also maërl)

noun

  • The remains of calcareous red seaweeds (coralline rhodophytes), especially those occurring in deposits off the coast of Brittany, used as a source of lime by farmers; any of these seaweeds, belonging chiefly to the genus Lithothamnion.

Origin

Early 20th century; earliest use found in Encyclopaedia Britannica. From French maërl or its etymon Breton maerl, merl from Old French marle.

Pronunciation

maerl

/mɛːl//ˈmɑːəːl/