tit3 dau3鐵竇铁窦

Jyutpingtit3 dau3
Yaletit dau

Definition

An illegal den or vice venue heavily secured or protected from police raids by bribery and connections.

colloquialplacesslang

How it's used

Refers specifically to an illicit establishment that operates with a degree of protection, often implying that the owners have paid off authorities or have strong underworld backing. The term carries a gritty, noir-like connotation often found in Hong Kong crime films. It is rarely used to describe a simple illegal activity, but rather a fixed, fortified location where such activities are institutionalized.

Measure word

go3go

Common phrases

to raid a gambling den

Common mistake

Do not confuse this with a simple hideout or a regular illegal shop, as the term specifically implies a level of systemic corruption or long-term immunity from law enforcement.

Grammar color guide

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Verb
Adjective
Adverb
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Connector