/ˈkrɔːsboʊnz/
cross·bones
BrE /ˈkrɒsbəʊnz/
NAmE /ˈkrɔːsboʊnz/
[pl.]
➡ skull and crossbones
a picture of a human skull above two crossed bones, used in the past on the flags of pirate ships, and now used as a warning on containers with dangerous substances inside