PETROLEUM n.
oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composit…
PILE n.
subordinaries having the form of a wedge, usually placed palewise, with the broadest end uppermost. Pile bridge, a bridge of which the roadway is supported on piles. -- Pile cap, a beam resting upon and connecting the heads of piles. -- Pile driver, or Pile engine, an apparatus for driving down piles, consisting usu…