• synonyms


or Coal Sack

See more synonyms for Coalsack on Thesaurus.com
noun Astronomy.
  1. a dark nebula in the southern constellation Crux, whose dust particles obscure light from Milky Way stars behind it.
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Origin of Coalsack

First recorded in 1625–35; coal + sack1
Also called Southern Coalsack.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018