This is the 7838th most frequent Polish word.
metto
"Metto" is not a Polish word. It may be a misspelling or from another language.
Here, 'metto' functions as the first person singular present tense of the verb used to mean 'put' in contexts where an object is placed somewhere.
Metto książkę na stole.
I put the book on the table.
In this sentence, 'metto' expresses the idea of placing abstract concepts, like feelings, in a figurative sense.
Metto moje uczucia na bok.
I put my feelings aside.
'Metto' is used to indicate the action of donning or placing an item onto oneself.