coal-swamp

from The Century Dictionary.

• noun A coastal lagoon, of the Carboniferous or other geological period, overgrown with the vegetation from which coal-beds have been formed.
• noun According to their composition, into at least 20 different types of coloring-matters, the following being the classification adopted in A. E. Green's translation of Schultz and Julius's “Systematic Survey of the Organic Coloring Matters.” This classification is chiefly used by color-manufacturers and color-chemists: nitro coloring-matters;
• noun monoazo coloring-matters;
• noun diazo coloring-matters;
• noun triazo coloring-matters;
• noun tetrakisazo coloring-matters;
• noun nitroso or quinoneoxime coloring-matters;
• noun stilbene coloring-matters;
• noun oxyketone, oxylactone, and oxyquinone colors (excluding anthracene derivatives);
• noun diphenylmethane coloring-matters;
• noun (10) triphenylmethane coloring-matters;
• noun (11) xanthene coloring-matters (pyronines, phthaleins, and rhodamines);
• noun (12) acridine coloring-matters;
• noun (13) anthracene coloring-matters;
• noun (14) indophenols, indamines, and allies;
• noun (15) azines and azonium coloring-matters (eurodines, safranines, indulines, and rosindulines);
• noun (16) oxazine coloring-matters;
• noun (17) thiazine coloring-matters;
• noun (18) thiazol or thiobenzenyl coloring-matters;
• noun (19) quinoline coloring-matters;
• noun (20) sulphid coloring-matters.
• noun According to their application, into 10 groups: basic colors;
• noun phthalic anhydrid colors;
• noun acid colors;
• noun direct cotton colors;
• noun sulphid colors;
• noun insoluble azo colors;
• noun mordant-acid colors;
• noun mordant colors;
• noun reducible vat colors;
• noun (10) aniline black. This classification is used by textile-colorists.