noun to overspread or manure with marl; as, to marl a field.
2. marl ·vt to cover, as part of a rope, with marline, marking a pecular hitch at each turn to prevent unwinding.
3. 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.