Definitions
1.NounThe one or single occasion; the present reason or purpose."That will do for the nonce, but we'll need a better answer for the long term."
2.NounA nonce word."I had thought that the term was a nonce, but it seems as if it's been picked up by other authors."
3.NounA value constructed so as to be unique to a particular message in a stream, in order to prevent replay attacks.
4.AdjectiveOne-off; produced or created for a single occasion or use. Denoting something occurring once.
5.NounA sex offender, especially one who is guilty of sexual offences against children. .mw-parser-output .defdate{font-size:smaller}
6.NounA pedophile.
7.NounA police informer, one who betrays a criminal enterprise
8.NounA stupid or worthless person."Shut it, ya nonce!"