marl
1. marl \'ma:r(*)l\ \'ma:r-le-\ n [ME, fr. MF marle, fr. ML margila, dim. of L marga marl, fr.]Gaulish : a loose or crumbling earthy deposit (as of sand, silt, or clay) that con tains a substantial amount of calcium carbonate - marly aj 2. marl vt : to dress (land) with marl 3. marl vt [D marlen, back-formation fr. marling] : to cover or fasten with marline