- (Received Pronunciation) enPR: mäl, IPA(key): /mɑːl/
- (General American) enPR: märl, IPA(key): /mɑɹl/
- Rhymes: -ɑː(ɹ)l
- A mixed earthy substance, consisting of carbonate of lime, clay, and possibly sand, in very variable proportions, and accordingly designated as calcareous, clayey, or sandy.
1955, Robert Herman Bogue, The chemistry of portland cement, pages 39:
- Important marl and marine-shell deposits are worked in Michigan, Virginia, and Florida.
2004, Peter Porter, “Why Did Dante Pick on Suicides”, in Afterburner:
- Those loved unhappy shades whom Dante turned / To sticks and marl
a mixed earthy substance
- To cover, as part of a rope, with marline, marking a peculiar hitch at each turn to prevent unwinding.