marl
noun
[ mɑːl ]
• an unconsolidated sedimentary rock or soil consisting of clay and lime, formerly used as fertilizer.
• "the ancient right to dig marl for fertilizer"
marl
verb
• apply marl to.
• "small fields were being assiduously marled to produce corn crops"
Origin:
Middle English: from Old French marle, from medieval Latin margila, from Latin marga, of Celtic origin.
marl
noun
• a mottled yarn of differently coloured threads, or fabric made from this yarn.
• "blue marl leggings"
Origin:
late 19th century: shortening of marbled.