课
Pinyin: kè
class; lesson
Example sentence
我上午有三节课。
Wǒ shàngwǔ yǒu sān jié kè.
I have three classes in the morning.
What 课 means
课 (kè) is a Chinese word meaning “class; lesson”. It belongs to the School & Things topic and appears at HSK 2 (and again in HSK 3), so it is one of the words worth learning early when you study Chinese.