ALL meanings of coalsack
Coal·sack
C c - noun coalsack a sack in which coal is carried 3
- noun coalsack a prominent dark nebula in the Milky Way near the constellation Crux 3
- noun coalsack a dark nebula in the southern constellation Crux, whose dust particles obscure light from Milky Way stars behind it. 1
- noun coalsack A sack for carrying coal. 0
- noun coalsack (astronomy) Any of the spaces in the Milky Way which are very black, owing to the nearly complete absence of stars. 0