1. vonce - Noun
2. vonce - Adverb
(US, slang) Marijuana; cannabis, especially used as a drug.
(Yiddish) Something or someone small and annoying.
(slang) Sexual activity.
(slang, jazz) A state in which the musician produces great improvization intuitively.
vonce (plural vonces)
(US, slang, term of abuse) A jerk; an unpleasant person.
vonce (not comparable)
Pronunciation spelling of once, imitative of German-accented or non-native English.