BOMBARDIER n.
A noncommissioned officer in the British artillery. Bombardier beetle (Zoöl.), a kind of beetle (Brachinus crepitans), so called because, when disturbed, it makes an explosive discharge of a pungent and acrid vapor from its anal glands. The name is applied to other related species, as the B. displosor, which can produc…
BOWLDER; BOULDER n.
A mass of any rock, whether rounded or not, that has been transported by natural agencies from its native bed. See Drift. Bowlder clay, the unstratified clay deposit of the Glacial or Drift epoch, often containing large numbers of bowlders. -- Bowlder wall, a wall constructed of large stones or bowlders.…