BISCUIT n.
A kind of unraised bread, of many varieties, plain, sweet, or fancy, formed into flat cakes, and bakes hard; as, ship biscuit. According to military practice, the bread or biscuit of the Romans was twice prepared in the oven. Gibbon.
BITUMEN n.
y extension, any one of the natural hydrocarbons, including the hard, solid, brittle varieties called asphalt, the semisolid maltha and mineral tars, the oily petroleums, and even the light, volatile naphthas.