A skull tattoo is a symbol that can have multiple meanings depending on the context in which it is used. Generally speaking, it is a symbol of mortality and death, used to represent the fragility of life and our own mortality. It can also be used as a sign of strength, resilience, or protection. It can have spiritual or religious meanings, such as representing the afterlife or a reminder to live life to its fullest. Depending on the design of the tattoo, it could also represent rebellion, risk-taking, or even life’s challenges.