"Le petit déjeuner" means the breakfast.
"un petit verre" is a small glass. un petit verre ? = fancy a drink?
Petit means small or little in French. Panachin doesn't mean anything.
"Petit Fromage" means Little cheese
un petit oiseau is 'a small bird' in French.
What do you mean in amercian?! Petit ami is french for boyfriend, or literally 'little friend'! It can mean girlfriend too if spelt 'petite amie'.
Le petit marché means 'the small market' in French.
"bun"
"for the kid"
Small talk
The word "short" in French can be translated to "court" (for length) or "petit" (for size).
assez petit means rather small, shortish, somewhat small in French.