Meaning of the word "old hat" in English

What does "old hat" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

old hat

US /oʊld hæt/
UK /əʊld hæt/
"old hat" picture

Idiom

something that is old-fashioned, out of date, or no longer interesting because it has been done or seen many times before

Example:
That kind of technology is old hat now; everyone uses smartphones.
His jokes are a bit old hat, but he still makes people laugh.