Which signal word is associated with a skull and crossbones?

The signal word "Danger: Poison" is specifically associated with the skull and crossbones symbol. This symbol is used to denote a substance that is highly toxic and poses a significant risk to human health upon exposure or ingestion. The presence of this symbol, along with the word "Poison," indicates that the product can cause severe health effects or death with minimal exposure, making it crucial for users to handle such substances with extreme care.

In contrast, the signal words "Caution," "Warning," and "Danger" alone do not convey the same immediate and lethal implications that "Danger: Poison" does. While "Danger" indicates a hazardous situation, it does not specify that the product is toxic as profoundly as "Danger: Poison." Therefore, understanding the specific associations of these signal words with their respective symbols helps in recognizing the level of danger a substance presents.