Coalsack

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Coalsack \Coal"sack`\, n. [Coal + 2d sack.] (Astron.)
     Any one of the spaces in the Milky Way which are very black,
     owing to the nearly complete absence of stars; esp., the
     large space near the Southern Cross sometimes called the
     {Black Magellanic Cloud}.
     [Webster 1913 Suppl.]