\Rash\, v. t. [For arace]
1. To pull off or pluck violently. [Obs.]
2. To slash; to hack; to slice. [Obs.]
         Rushing of helms and riving plates asunder.
                                               --Spenser.

\Rash\, n. [OF. rashe an eruption, scurf, F. rache; fr.
(assumed) LL. rasicare to scratch, fr. L. radere, rasum, to
scrape, scratch, shave. See {Rase}, and cf. {Rascal}.] (Med.)
A fine eruption or efflorescence on the body, with little or
no elevation.
{Canker rash}. See in the Vocabulary.
{Nettle rash}. See {Urticaria}.
{Rose rash}. See {Roseola}.
{Tooth rash}. See {Red-gum}.

\Rash\, n. [Cf. F. ras short-nap cloth, It. & Sp. raso
satin (cf. {Rase}); or cf. It. rascia serge, G. rasch,
probably fr. Arras in France (cf. {Arras}).]
An inferior kind of silk, or mixture of silk and worsted.
[Obs.] --Donne.

\Rash\, a. [Compar. {Rasher}; superl. {Rashest}.] [Probably
of Scand. origin; cf. Dan. & Sw. rask quick, brisk, rash,
Icel. r["o]skr vigorous, brave, akin to D. & G. rasch quick,
of uncertain origin.]
1. Sudden in action; quick; hasty. [Obs.] ``Strong as
   aconitum or rash gunpowder.'' --Shak.
2. Requiring sudden action; pressing; urgent. [Obs.]
         I scarce have leisure to salute you, My matter is so
         rash.                                 --Shak.
3. Esp., overhasty in counsel or action; precipitate;
   resolving or entering on a project or measure without due
   deliberation and caution; opposed to prudent; said of
   persons; as, a rash statesman or commander.
4. Uttered or undertaken with too much haste or too little
   reflection; as, rash words; rash measures.
5. So dry as to fall out of the ear with handling, as corn.
   [Prov. Eng.]
Syn: Precipitate; headlong; headstrong; foolhardy; hasty;
     indiscreet; heedless; thoughtless; incautious; careless;
     inconsiderate; unwary.
Usage: {Rash}, {Adventurous}, {Foolhardy}. A man is
       adventurous who incurs risk or hazard from a love of
       the arduous and the bold. A man is rash who does it
       from the mere impulse of his feelings, without
       counting the cost. A man is foolhardy who throws
       himself into danger in disregard or defiance of the
       consequences.
             Was never known a more adventurous knight.
                                               --Dryden.
             Her rush hand in evil hour Forth reaching to the
             fruit, she plucked, she eat.      --Milton.
             If any yet to be foolhardy To expose themselves
             to vain jeopardy; If they come wounded off, and
             lame, No honors got by such a maim. --Hudibras.

\Rash\, v. t.
To prepare with haste. [Obs.] --Foxe.