coalsack

n. 装煤麻袋, 煤袋(南十字星座中的一个暗星云)

词形变化

coalsacks 复数 coalsacks

别名

coal-sack

释义与例句

n.
  1. 1.

    A sack for carrying coal.

  2. 2.

    Any of the spaces in the Milky Way which are very black, owing to the nearly complete absence of stars.

    天文

词源

From coal + sack.

来源：wiktionary