‘老巢’ literally means ‘old nest’—combining 老 (lǎo, ‘old’) and 巢 (cháo, ‘nest’). In classical and literary Chinese, 巢 often refers to the dwelling place of animals (e.g., birds or beasts), evoking a sense of secrecy, permanence, and territoriality. Over time, this imagery was extended metaphorically to human groups, especially those operating covertly or outside mainstream society.

In modern spoken Chinese, ‘老巢’ is an informal, slightly humorous or derogatory slang term for a group’s main base of operations—most commonly used for criminal gangs, hackers, or even mischievous children hiding out. It carries connotations of entrenchedness, hidden activity, and sometimes recklessness. While not inherently violent, it almost always implies illegitimacy or informality, and is rarely used for official institutions like police stations or corporate offices.