useless trivia: What Word Means: A Leader?

Questions

In Japanese cooking what name is given to small pieces of raw fish served with cold rice?

If in law someone is convicted of A.B.H. for what does the 'A' stand?

'The Slave of Duty', is the alternate title for which Gilbert and Sullivan operetta?

In Indonesian cookery what name is given to meat kebabs served with a peanut sauce?

What would a car have if its specification included A.B.S.?