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skull and crossbones

1 ENTRIES FOUND:
skull and crossbones /ˌskʌlənˈkrɑːsˌboʊnz/ noun
skull and crossbones
/ˌskʌlənˈkrɑːsˌboʊnz/
noun
Britannica Dictionary definition of SKULL AND CROSSBONES
[singular]
: 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