elephant
noun [ C ] uk/ˈel.ɪ.fənt/ us/ˈel.ə.fənt/
A2 象，大象
a very large grey mammal that has a trunk (= long nose) with which it can pick things up
- More examples
- Measures must be taken to protect the world's depleted elephant population.
- In the past eight years, the elephant population in Africa has been halved.
Idiom
an elephant in the roomidiom informal （人们不愿提及的）棘手问题
If you say there is an elephant in the room, you mean that there is an obvious problem or difficult situation that people do not want to talk about.