화두가 · 화두를
hot topic, key issue, main theme of discussion
Example
요즘 인공지능이 사회의 가장 큰 화두입니다.
These days, AI is society's biggest topic of discussion.
Word parts
화 speech+두 head
Originally a Zen Buddhist term for a meditation riddle; now 'the topic at the head of the talk'.
Related words