蚊

蚊

Mosquito.

Here, 蚊 is used as a noun referring to the insect commonly known as a mosquito.

昨晚有很多蚊子在房间里飞来飞去。

Last night, there were many mosquitoes flying around in the room.

In this instance, 蚊 is a component in the compound noun 蚊香 referring to mosquito repellents.

为了防止蚊虫叮咬，我们点了蚊香。

To prevent mosquito bites, we lit mosquito repellents.

Here, 蚊 is the root word in 蚊子, explicitly naming the mosquito insect.

夏季夜晚常见的飞虫之一是蚊子。

One of the commonly seen flying insects on summer nights is the mosquito.