界隈

• (Tokyo) かいわい [káꜜìwàì] (Atamadaka – [1])^[1]
• IPA^(key): [ka̠iβ̞a̠i]

界(かい)隈(わい) • (kaiwai) 

1. vicinity; neighborhood; surrounding area
   • 1914, 夏目漱石 [Natsume Sōseki], chapter 5, in こゝろ [Kokoro], 下 先生と遺書 [Sensei's Testament]:

     私(わたくし)の家(いえ)は旧(ふる)い歴(れき)史(し)をもっているので、少(すこ)しはその界(かい)隈(わい)で人(ひと)に知(し)られていました。

     Watakushi no ie wa furui rekishi o motte iru no de, sukoshi wa sono kaiwai de hito ni shirarete imashita.

     My house has a long history, so it is somewhat well-known by people in the surrounding area.

2. (Internet slang, by extension) community; fandom; sphere

   ボカロ界隈(かいわい)

   bokaro kaiwai

   VOCALOID community

• “界^▲隈”, in 漢字ぺディア [Kanjipedia]‎^[1] (in Japanese), The Japan Kanji Aptitude Testing Foundation, 2015–2026