BLOCK SYSTEM n.
into short sections, as of three or four miles, and trains are so run by the guidance of electric, or combined electric and pneumatic, signals that no train enters a section or block until the preceding train has left it, as in absolute blocking, or that a train may be allowed to follow another into a block as long as…
BLUE a.
r. -- Blue vitriol (Chem.), sulphate of copper, a violet blue crystallized salt, used in electric batteries, calico printing, etc. -- Blue water, the open ocean. -- To look blue, to look disheartened or dejected. -- True blue, genuine and thorough; not modified, nor mixed; not spurious; specifically, of uncompromis…
BOARD n.
r any authorized assembly or meeting, public or private; a number of persons appointed or elected to sit in council for the management or direction of some public or private business or trust; as, the Board of Admiralty; a board of trade; a board of directors, trustees, commissioners, etc. Both better acquainted with a…