My face is foul with weeping. Job. xvi. 16.

Who first seduced them to that foul revolt? Milton.

Let us, like merchants, show our foulest wares. Shak.

So foul a sky clears not without a storm. Shak.

Foul anchor. (Naut.) See under Anchor. -- Foul ball (Baseball), a ball that first strikes the ground outside of the foul ball lines, or rolls outside of certain limits. -- Foul ball lines (Baseball), lines from the home base, through the first and third bases, to the boundary of the field. -- Foul berth (Naut.), a berth in which a ship is in danger of fouling another vesel. -- Foul bill, or Foul bill of health, a certificate, duly authenticated, that a ship has come from a place where a contagious disorder prevails, or that some of the crew are infected. -- Foul copy, a rough draught, with erasures and corrections; -- opposed to fair or clean copy. "Some writers boast of negligence, and others would be ashamed to show their foul copies." Cowper. -- Foul proof, an uncorrected proof; a proof containing an excessive quantity of errors. -- Foul strike (Baseball), a strike by the batsman when any part of his person is outside of the lines of his position. -- To fall foul, to fall out; to quarrel. [Obs.] "If they be any ways offended, they fall foul." Burton. -- To fall, or run, foul of. See under Fall. -- To make foul water, to sail in such shallow water that the ship's keel stirs the mud at the bottom.