“睛”是眼球中间的黑色部分，我们常常在“眼睛”这个词里看到它。

"睛" is the black part in the center of the eyeball, often seen in the word "眼睛" (eye).

它很少单独用，一般和“眼”一起说。

It is rarely used alone and is usually said together with "眼" (eye).