·noun To overspread or manure with marl; as, to marl a field.
II. Marl ·vt To cover, as part of a rope, with marline, marking a pecular hitch at each turn to prevent unwinding.
III. Marl ·noun A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. ·see Greensand.