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skull and crossbones

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noun skull and cross·bones \-ˈkrȯs-ˌbōnz\

Simple Definition of skull and crossbones

  • : a picture of a human skull above two crossed bones that was used on the flags of pirate ships in the past and is now used as a warning label on containers of poisonous or dangerous substances

Source: Merriam-Webster's Learner's Dictionary

Full Definition of skull and crossbones

plural

skulls and crossbones

  1. :  a representation of a human skull over crossbones usually used as a warning of danger to life

1826

First Known Use of skull and crossbones

1826


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