Search Result for "marl": 
Wordnet 3.0

NOUN (1)

1. a loose and crumbling earthy deposit consisting mainly of calcite or dolomite; used as a fertilizer for soils deficient in lime;


The Collaborative International Dictionary of English v.0.48:

Greensand \Green"sand`\ (-s[a^]nd`), n. (Geol.) A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime. [1913 Webster] Note: [hand]Greensand is often called marl, because it is a useful fertilizer. The greensand beds of the American Cretaceous belong mostly to the Upper Cretaceous. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

Marl \Marl\, v. t. [imp. & p. p. Marled; p. pr. & vb. n. Marling.] [Cf. F. marner. See Marl, n.] To overspread or manure with marl; as, to marl a field. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

Marl \Marl\, v. t. [See Marline.] (Naut.) To cover, as part of a rope, with marline, marking a pecular hitch at each turn to prevent unwinding. [1913 Webster] Marling spike. (Naut.) See under Marline. [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

Marl \Marl\, n. [OF. marle, F. marne, LL. margila, dim. of L. marga marl. Originally a Celtic word, according to Pliny, xvii. 7: "Quod genus terrae Galli et Britanni margam vocant." [root]274.] A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very variable proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand. [1913 Webster]
WordNet (r) 3.0 (2006):

marl n 1: a loose and crumbling earthy deposit consisting mainly of calcite or dolomite; used as a fertilizer for soils deficient in lime