When i was brought up in Liverpool told to call my sister moi what is the literal translation of this term?

"Moi" in this context is not a literal translation, but rather a dialectal term used in some parts of England, particularly in Liverpool, as a familiar term for "my". It's essentially a shortened version of the word.

So, when someone from Liverpool tells you to call your sister "moi", they are saying "call your sister my [sister]".

It's important to note that "moi" is not a standard English word and would likely be understood only by people familiar with this specific dialect.