noun
banker (gambling); bookmaker; operator of a gambling den
Refers to the person who runs a gambling operation, takes bets, and pays out winnings. Often used in contexts like illegal gambling or traditional games.
胴元は賭け金を集めて、勝者に配当を払う。
The banker collects the bets and pays out the winnings.
警察が違法賭博の胴元
The police arrested the operator of the illegal gambling den.
noun
Extended, colloquial use for someone who runs or controls a group, business, or scheme, often with a slightly shady or informal nuance.
あの男がこの辺りの胴元だ。
That guy is the boss around here.
親分 is a more general term for a boss or leader, especially in yakuza or hierarchical groups, while 胴元 specifically originates from gambling contexts.
元締め also means a person in charge or a manager, but is broader and can be used in legitimate business settings, whereas 胴元 carries a stronger gambling or underworld connotation.
Compound of 胴 (どう, 'trunk' or 'body') and 元 (もと, 'origin' or 'base'). The term originally referred to the central figure in a gambling game who holds the stakes, hence the 'body' or 'core' of the operation.