Meaning of lǎo dì:
lǎo dì
老弟
Noun
(affectionate form of address for a male who is not very much younger than oneself) my boy; old pal
Wǒ jīngcháng hé lǎo dì qù lánqiúchǎng dǎqiú.
我经常和老弟去篮球场打球。
I often go to the basketball court with my boy to play.
Zuótiān wǎnshàng, wǒ hé wǒ de lǎodì yīqǐ hējiǔ liáotiān.
昨天晚上，我和我的老弟一起喝酒聊天。
Last night, I had drinks and chatted with my old pal.
