Meaning of kuài:
kuài
块
Noun
lump; chunk; piece
Wǒ gěi nǐ yī kuài dàngāo.
我给你一块蛋糕。
I give you a piece of cake.
Measure Word
classifier for pieces of cloth, cake, soap etc; (coll.) classifier for money and currency units
Wǒ mǎi le yī kuài dàngāo.
我买了一块蛋糕。
I bought a piece of cake.
Zhè jiàn yīfu zhǐ yào wǔ kuài qián.
这件衣服只要五块钱。
This piece of clothing costs only five kuai.
