A fine clay, rich in kaolinite, used in ceramics, paper-making, etc.
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.
To cover with the earthy substance called marl.
To cover, as part of a rope, with marline, marking a peculiar hitch at each turn to prevent unwinding.