But any context where you misspell "año" will suggest Spanish, so the misspelling will evoke anuses.

If it actually did evoke that in the average person, the mistake wouldn't happen so often.

And what if it evokes the very similar Portuguese, where "ano" does in fact mean year?

Seemingly it would then be ano novo instead of ano nuevo.

Aaand we're off!

(For me, the name of the place is "Año Nuevo State Park", in Spanish, so "Ano Nuevo" is simply misspelled. Don't let your technology control you.)

What does Ano mean in English?

Not everything needs to have a meaning. But if you really want an answer, it's a name that some people have.