It's a pronoun that can replace a place in a sentence:
Are you going to Paris ? Yes, I'm going there !
Vas-tu à Paris ? Oui, j'y vais
It can also replace a complement of a verb introduce by à and describing a thing (not a person)
Are you thinking about his victory ? Yes, It'm thinking about it
Penses-tu à sa victoire ? Oui, j'y pense
As penser introduces his complement with à
"Il y a" in French translates to "there is" or "there are" in English. It is used to indicate the existence or presence of something.
"Vas y" in French means "go ahead" or "come on." It is often used to encourage or instruct someone to proceed with an action.
arm y it mean arm
il y a
comment y aller means 'how to get there' in French.
"that's it"
i think it might mean "there is a hurricane"
y don't you ask your Grammy stupid
"there is a door and..."
we go (there) to swim
Il y a un château means "there is a castle" in French.
it is french for a pencil sharpener