鸡蛋 (jīdàn) means "chicken egg" or simply "egg" in everyday Chinese. It is one of the most common food-related words, combining 鸡 (chicken) and 蛋 (egg), and is used in cooking, nutrition, and daily conversation.
早上我一般吃两个鸡蛋和一杯牛奶。
zǎoshang wǒ yībān chī liǎng gè jīdàn hé yī bēi niúnǎi.
In the morning I usually eat two eggs and drink a glass of milk.
做这道菜需要三个鸡蛋,你去买一些吧。
zuò zhè dào cài xūyào sān gè jīdàn, nǐ qù mǎi yīxiē ba.
This dish requires three eggs; go buy some.
超市的鸡蛋今天打折,我多买了几盒。
chāoshì de jīdàn jīntiān dǎzhé, wǒ duō mǎi le jǐ hé.
Eggs are on sale at the supermarket today, so I bought several extra cartons.