"By hand" on envelopes whose door-to-door delivery is personal without reliance upon postal services and "in town" generally are English equivalents of the French phrase en ville. Context makes clear which form suits. The pronunciation will be "aw veel" in French.
what if we're going to town? / fancy a trip in town?
"en ville" means 'in town, downtown'
"On guard!" in English is en garde! in French.
"Tu vas où en ville?" means "Where are you going in the city?" in French.
En garde in French means "on (your) guard (because I am about to attack, in fencing)" in English.
En ré mineur in French means "in D minor" in English.
Travaillez en paires in French means "Work in pairs!" in English.
Comment dit-on en français? in French is "How does one say in French?" in English.
Un film en anglais in French means "a film in English" in English.
En ville means village in french :p
Que veut dire en français? in French is "What does (it) mean?" in English.
Mais parle-moi en français! in French means "But speak to me in French!" in English.