also: ぼんなか
good friend from a gambling den
Slang term for a close friend one has become acquainted with at a gambling den; rare and limited to that subculture.
He's my bonnaka; we often go to the gambling den together.
ボンナカ同士で金の貸し借りはしないほうがいい。
It's better not to lend or borrow money between bonnaka.
Hiragana spelling, also used.
Kanji spelling using 盆 (gambling den) and 仲 (relationship); rare and not the usual written form.
Likely a compound of 盆 (bon, 'gambling den') and 仲 (naka, 'relationship'), with the reading ボンナカ reflecting slangy katakana usage. The exact origin is uncertain but clearly tied to gambling subculture.