headset
/ˈhedset/noun
1
- a set of headphones, typically with a microphone attached, used especially in telephony and radio communication（尤指在电话及无线电通信中使用, 通常配有扩音器的）整套头戴式耳机。
2
- the bearing assembly which links the front fork of a bicycle to its frame（连接自行车前叉和车架的）支承结构。