Definition of "blue-black" [blue-black]

• Very dark blue. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Yet, in our morning conversations, we both acknowledge that my talent with a Beretta pistol or his with a blue-black machine-gun pistol are not real."
• "There are still some fat, red berries among the hawthorns, though, and blackthorn bushes have their own blue-black berries known as sloes, which make delicious sloe gin."
• "The water was very smooth below us, the hard colour of some blue-black stone."