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2 definitions found
 for Spark arrester
From The Collaborative International Dictionary of English v.0.48 :

  Spark \Spark\, n. [OE. sparke, AS. spearca; akin to D. spark,
     sperk; cf. Icel. spraka to crackle, Lith. sprag["e]ti, Gr. ?
     a bursting with a noise, Skr. sph?rj to crackle, to thunder.
     Cf. Speak.]
     1. A small particle of fire or ignited substance which is
        emitted by a body in combustion.
        [1913 Webster]
              Man is born unto trouble, as the sparks fly upward.
                                                    --Job v. 7.
        [1913 Webster]
     2. A small, shining body, or transient light; a sparkle.
        [1913 Webster]
     3. That which, like a spark, may be kindled into a flame, or
        into action; a feeble germ; an elementary principle. "If
        any spark of life be yet remaining." --Shak. "Small
        intellectual spark." --Macaulay. "Vital spark of heavenly
        flame." --Pope.
        [1913 Webster]
              We have here and there a little clear light, some
              sparks of bright knowledge.           --Locke.
        [1913 Webster]
              Bright gem instinct with music, vocal spark.
        [1913 Webster]
     Spark arrester, a contrivance to prevent the escape of
        sparks while it allows the passage of gas, -- chiefly used
        in the smokestack of a wood-burning locomotive. Called
        also spark consumer. [U.S.]
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  spark arrester
      n 1: electrical device to reduce sparking when electrical
           contacts are opened or closed
      2: a wire net to stop sparks from an open fireplace or
         smokestack [syn: spark arrester, sparker]

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