A "zinzan" is a drop-goal attempt from 40-50 metres by a forward
which only gets about 2-3m off the deck. Named after the
couple of efforts Zinzan Brooke tried in the 1994 All Black
vs South Africa tests. It's such a silly sounding name that commentators
can't resist using it.
Eg: "Eales! has tried another zinzan from half way
again - the guy is a bloody hero!!! "