党魁 (dǎngkuí) is a noun meaning "party leader," referring to the head of a political party. It is commonly used in news and political contexts. The character 魁 conveys the sense of "chief" or "leader."
反对党的党魁在新闻发布会上发表了声明。
fǎnduìdǎng de dǎngkuí zài xīnwén fābùhuì shàng fābiǎo le shēngmíng.
The opposition party leader issued a statement at the press conference.
她成为了该党历史上最年轻的党魁。
tā chéngwéi le gāi dǎng lìshǐ shàng zuì niánqīng de dǎngkuí.
She became the youngest party leader in the party's history.
两位党魁将在下周进行电视辩论。
liǎng wèi dǎngkuí jiāng zài xià zhōu jìnxíng diànshì biànlùn.
The two party leaders will hold a televised debate next week.