also: ベットタウン
noun
commuter town; bedroom community; dormitory town
A residential area from which people commute to work in a larger city; often used in urban planning contexts.
wasei-eigo (Japanese-coined English), from bed town
この町は東京のベッドタウンとして発展してきた。
This town has developed as a commuter town for Tokyo.
ベッドタウンでは昼間
In a bedroom community, the daytime population is small.