资料来源 : Webster's Revised Unabridged Dictionary (1913)

Pebble \Peb"ble\, n. [AS. papolst[=a]n; cf. L. papula pimple,
   mote. See {Stone}.]
   1. A small roundish stone or bowlder; especially, a stone
      worn and rounded by the action of water; a pebblestone.
      ``The pebbles on the hungry beach.'' --Shak.

            As children gathering pebbles on the shore.
                                                  --Milton.

   2. Transparent and colorless rock crystal; as, Brazilian
      pebble; -- so called by opticians.

   {Pebble powder}, slow-burning gunpowder, in large cubical
      grains.

   {Scotch pebble}, varieties of quartz, as agate, chalcedony,
      etc., obtained from cavities in amygdaloid.