What's "named after" mean?

Native speaker’s answer
Rebecca
To "name X after" someone or something means to give a person or thing the name of another person or thing. For example, "Wai" and "Tomo" are names that exist already, and the caves were named after (given the names of) these things. In most cases, this naming is done to celebrate, commemorate, or honor the preceding person or thing. Ex: My name is John. I was named after my grandfather. Ex: This bridge was named after the man who built it.