2. (Paleon.) The reflexed margin of the trilobite carapace.

Down"com`er (?), n. A pipe to conduct something downwards; specif.: (a) (Iron Manuf.) A pipe for leading the hot gases from the top of a blast furnace downward to the regenerators, boilers, etc. (b) (Steam Engin.) In some water-tube boilers, a tube larger in diameter than the water tubes to conduct the water from each top drum to a bottom drum, thus completing the circulation.

Down"-wind`, adv. With the wind.

||Doy`en" (?), n. [F. See Dean.] Lit., a dean; the senior member of a body or group; as, the doyen of French physicians. "This doyen of newspapers." A. R. Colquhoun.

{ Drag line or rope }. (Aëronautics) A guide rope.

Draw (?), v. t. 1. In various games: (a) (Cricket) To play (a short-length ball directed at the leg stump) with an inclined bat so as to deflect the ball between the legs and the wicket. (b) (Golf) To hit (the ball) with the toe of the club so that it is deflected toward the left. (c) (Billiards) To strike (the cue ball) below the center so as to give it a backward rotation which causes it to take a backward direction on striking another ball. (d) (Curling) To throw up (the stone) gently.

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