Source : Webster's Revised Unabridged Dictionary (1913)

Rush \Rush\, n. [OE. rusche, rische, resche, AS. risce, akin to
   LG. rusk, risch, D. & G. rusch; all probably fr. L. ruscum
   butcher's broom; akin to Goth. raus reed, G. rohr.]
   1. (Bot.) A name given to many aquatic or marsh-growing
      endogenous plants with soft, slender stems, as the species
      of {Juncus} and {Scirpus}.

   Note: Some species are used in bottoming chairs and plaiting
         mats, and the pith is used in some places for wicks to
         lamps and rushlights.

   2. The merest trifle; a straw.

            John Bull's friendship is not worth a rush.
                                                  --Arbuthnot.

   {Bog rush}. See under {Bog}.

   {Club rush}, any rush of the genus {Scirpus}.

   {Flowering rush}. See under {Flowering}.

   {Nut rush}
      (a) Any plant of the genus {Scleria}, rushlike plants with
          hard nutlike fruits.
      (b) A name for several species of {Cyperus} having
          tuberous roots.

   {Rush broom}, an Australian leguminous plant ({Viminaria
      denudata}), having long, slender branches. Also, the
      Spanish broom. See under {Spanish}.

   {Rush candle}, See under {Candle}.

   {Rush grass}, any grass of the genus {Vilfa}, grasses with
      wiry stems and one-flowered spikelets.

   {Rush toad} (Zo["o]l.), the natterjack.

   {Scouring rush}. (Bot.) Same as {Dutch rush}, under {Dutch.}
      

   {Spike rush}, any rushlike plant of the genus {Eleocharis},
      in which the flowers grow in dense spikes.

   {Sweet rush}, a sweet-scented grass of Arabia, etc.
      ({Andropogon sch[oe]nanthus}), used in Oriental medical
      practice.

   {Wood rush}, any plant of the genus {Luzula}, which differs
      in some technical characters from {Juncus}.

Bog \Bog\, n. [Ir. & Gael. bog soft, tender, moist: cf. Ir.
   bogach bog, moor, marsh, Gael. bogan quagmire.]
   1. A quagmire filled with decayed moss and other vegetable
      matter; wet spongy ground where a heavy body is apt to
      sink; a marsh; a morass.

            Appalled with thoughts of bog, or caverned pit, Of
            treacherous earth, subsiding where they tread. --R.
                                                  Jago.

   2. A little elevated spot or clump of earth, roots, and
      grass, in a marsh or swamp. [Local, U. S.]

   {Bog bean}. See {Buck bean}.

   {Bog bumper} (bump, to make a loud noise), {Bog blitter},
   {Bog bluiter}, {Bog jumper}, the bittern. [Prov.]

   {Bog butter}, a hydrocarbon of butterlike consistence found
      in the peat bogs of Ireland.

   {Bog earth} (Min.), a soil composed for the most part of
      silex and partially decomposed vegetable fiber. --P. Cyc.

   {Bog moss}. (Bot.) Same as {Sphagnum}.

   {Bog myrtle} (Bot.), the sweet gale.

   {Bog ore}. (Min.)
      (a) An ore of iron found in boggy or swampy land; a
          variety of brown iron ore, or limonite.
      (b) Bog manganese, the hydrated peroxide of manganese.

   {Bog rush} (Bot.), any rush growing in bogs; saw grass.

   {Bog spavin}. See under {Spavin}.