Its a french word meaning WITH
que is spanish for "what" avec is french for "with"
avec ca= with it, this
avec George means 'with George' in French.
Avec.
with
With
'se marier avec ' is 'to get married with ' in English.
Avec mes parents is french for: with my parents.
"J'aime sortir avec" = "I like going out with"
Do you mean "C'est avec qui?" It would help to have the context but essentially it means "With who?"
with you
Belle soirée avec... means "Beautiful evening with..."