BOATSWAIN n.
An officer who has charge of the boats, sails, rigging, colors, anchors, cables, cordage, etc., of a ship, and who also summons the crew, and performs other duties.
BONE n.
verted by calcination in close vessels; -- called also animal charcoal. It is used as a decolorizing material in filtering sirups, extracts, etc., and as a black pigment. See Ivory black, under Black. -- Bone cave, a cave in which are found bones of extinct or recent animals, mingled sometimes with the works and bones…