A rock nearly allied to basalt, of which it may be regarded as a more soft and earthy variety. Its color is a greenish gray, brown or black. It is opake, yields easily to the knife, and has a greasy feel. Its principal ingredient is silex. Gray wacky is a different species of rock, being a kind of sandstone. Wacky is a mineral sunstance intermediate between clay and basalt. , DIn mineralogy, a black wadd is a species of ore of manganese, of which there are four kinds; fibrous, ochery, pulverulent ochery, and dendritic. In some places, plumbago or black lead is called wad or wadd.

A little mass of some soft or flexible material, such as hay, straw, tow, paper, or old ropeyarn, used for stopping the charge of powder in a gun and pressing it close to the shot, or for keeping the powder and shot close.

A little mass, tuft or bundle, as of hay or peas. , DIn mineralogy, a black wadd is a species of ore of manganese, of which there are four kinds; fibrous, ochery, pulverulent ochery, and dendritic. In some places, plumbago or black lead is called wad or wadd.