This is the 6266th most frequent Portuguese word.
coringa
"Joker" or "wildcard."
In this context, 'coringa' is used metaphorically to denote something versatile or universally applicable.
Você pode usar este item como um coringa em qualquer situação.
You can use this item as a wildcard in any situation.
Here, 'Coringa' is the proper noun referring to the iconic fictional villain from comic literature.
O personagem Coringa é um dos vilões mais famosos dos quadrinhos.
The Joker character is one of the most famous villains in comics.
In this sentence, 'coringa' is used to describe a helpful, multi-functional feature as a figure of speech.