- 西门子 xīménzǐ SiemensA German surname; specifically, the German engineer and inventor Ernst Werner von Siemens (1816–1892) or the engineering and electronics company he founded.
- 哪门子 nǎménzi what kind of(colloquial) what kind of; used in rhetorical questions to emphasize that something is groundless, unnecessary, or uncalled for
- 西门子公司 xīménzǐgōngsī SiemensSiemens AG; a large German industrial manufacturing and technology conglomerate
- 脑门子 nǎoménzi foreheadforehead of a person or the corresponding part on the head of an animal
- 串门子 chuànménzi to drop in; to pay a callto visit someone's home for a casual chat or to pay a visit
- 走门子 zǒuménzi to use pullTo get what one wants by using social connections or by toadying to people in power.
- 托门子 tuōménzi to use connectionsTo ask someone to use their influence or connections on one's behalf; to seek a way to achieve a goal through back-door channels.
- 暗门子 ànménzi unlicensed prostitute(colloquial) A prostitute who works illegally and in secret.
- 西门子马丁炉 xīménzimǎdīnglú open-hearth furnaceSiemens-Martin furnace, a metallurgical furnace used for steelmaking with a shallow hearth and heat recovery system
- 那门子 nàménzi what kind ofrhetorical question used to express disbelief or annoyance regarding a certain situation or thing
- 出门子 chūménzi to marry(colloquial) to get married, used of women; same as [[出嫁|出嫁|chu1 jia4]]
- 顶门子 dǐngménzi firing chamberthe firing chamber of a rifle or the breech of a cannon
- 溜门子的 liūménzide sneak thief(regional) A thief who sneaks into a house to steal while people are not paying attention
- 风门子 fēngménzi storm doora door or curtain designed to block wind and cold; a ventilation door
- 耳门子 ěrménzi ear canalthe passage leading into the ear
- 尻门子 kāoménzi anusanus; a rural or colloquial term for the posterior opening of the digestive tract