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“skulls and crossbones”
A picture of a human skull situated above two crossed bones: This image of a skull and crossbones was used on pirates' flags as a symbol of death; however, it is sometimes currently used as a "warning label" on poisons; so, avoid, or stay away, from anything that uses such pictures!
This information about skulls and crossbones, which is utilizing the pictures, will NOT cause you any harm!
![An image once used by pirates on their flags.](http://www.wordinfo.info/words/images/skull-bones-1.jpg)
![These images are used as warnings for poisons or other deadly things.](http://www.wordinfo.info/words/images/skulls-3.jpg)
This entry is located in the following unit:
English Words in Action, Group S
(page 7)