Peb·ble n.
1. A small roundish piece of stone; especially, a stone worn and rounded by the action of water; a pebblestone. “The pebbles on the hungry beach.”
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.
Scotch a. Of or pertaining to Scotland, its language, or its inhabitants; Scottish.
Scotch broom Bot., the Cytisus scoparius. See Broom.
Scotch dipper, or Scotch duck Zool., the bufflehead; -- called also Scotch teal, and Scotchman.
Scotch fiddle, the itch. [Low] --Sir W. Scott.
Scotch mist, a coarse, dense mist, like fine rain.
Scotch nightingale Zool., the sedge warbler. [Prov. Eng.]
Scotch pebble. See under pebble.
Scotch pine Bot. See Riga fir.
Scotch thistle Bot., a species of thistle (Onopordon acanthium); -- so called from its being the national emblem of the Scotch.