1) Breckland District 
Bittering is the name of two former parishes in the county of Norfolk, England, now in the civil parish of Beeston with Bittering, west of East Dereham and south of Fakenham. Little Bittering parish was annexed to the neighbouring Beeston. Great Bittering parish was annexed to the neighbouring Gressenhall and Beetley. The mediaeval church of St Pe...
• (n.) A bitter compound used in adulterating beer; bittern.
Bit'ter·ing noun A bitter compound used in adulterating beer; bittern.