JMdict: 2829931

青線 【あおせん】

  1. [n] blue line
  2. [n] area around a red-light district where illegal prostitution occurred (marked on police maps by a blue line; 1940s-1956)
  3. [n] non-legal public waterway (denoted by a blue line on cadastral maps; sometimes no longer physically existing)
Search on Immersion Kit
Search on Forvo

Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
青 Blue, Green セイ, ショウ あお, あお-, あお.い 1
線 Line, Track セン すじ 2