You searched for: “polysemous
polysemous (adjective) (not comparable)
A reference to words having many meanings: The majority of natural human languages are polysemous or having more than one meaning per word.

When a word or phrase has several meanings, you can describe that word as a polysemous term.

One word that's famously polysemous is "bank."

(linguistic terms for words with two or more meanings; usually, multiple meanings of a word or words)