skull and crossbones

• 1. 

  N-SING A skull and crossbones is a picture of a human skull above a pair of crossed bones which warns of death or danger. It used to appear on the flags of pirate ships and is now sometimes found on containers holding poisonous substances. 骷髅标志; 骷髅画

  例：

  Skull and crossbones stickers on the drums aroused the suspicion of the customs officers.

  这些桶上贴的骷髅标志引起了海关官员的怀疑。