Definition of "crossbones" []

• A representation of two bones placed crosswise, usually under a skull, symbolizing danger or death. (noun-plural)

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.

• "Never reveal the secret of the Jolly Roger: the crossbones are the crossings—the lines that separate the contraries and opposites."
• "As far as the cards go, there was a card for the triangle swap, from Julie - she has cleverly portrayed the Bermuda Triangle on her card, complete with skull and crossbones, which is a little hard to see in the photo."
• "Perhaps the Detroit-style stop sign gained additional appeal from its multiple edges loosely resonating with those vivid, archaic crossbones."