bach (2)EnglishOxford Dictionary of Englishbach2 /batʃ / informal ▸ verb [no object] Australian and New Zealand English (especially of a man) live alone and do one's own cooking and housekeeping: Baldy bached in a hut down the road a bit. ▸ noun New Zealand English a small holiday house. – ORIGIN late 19th century (as a verb): abbreviation of bachelor.