Meaning of sù:
宿
old variant of 宿[su4]; old; former
Wǒmen jīnwǎn jiàng zài lǎo péngyǒu jiā sù.
我们今晚将在老朋友家宿。
We will stay the night at an old friend's house tonight.
Zhè dòng lóu hěn sù.
这栋楼很宿。
This building is very old.
Tā shì wǒ de lǎo sù yǒu.
他是我的老sù友。
He is my old friend.
surname Su; constellation
Zhè shì nǐ de xìng Sù ma?
这是你的姓宿吗?
Is this your surname Su?
Zhèxiē xīngxīng shǔyú bùtóng de xīngxiù.
这些星星属于不同的星宿。
These stars belong to different constellations.
lodge for the night
Wǒmen jīn wǎn yào zài zhège jiǔdiàn guò sù.
我们今晚要在这个酒店过宿。
We will lodge in this hotel tonight.
night; classifier for nights
Wǒmen jìhuà zài zhè jiā jiǔdiàn zhù yī xiǔ.
我们计划在这家酒店住一宿。
We plan to stay one night at this hotel.
Wǒmen zài Chéngdū zhùle sān gè xiǔ.
我们在成都住了三个宿。
We stayed in Chengdu for three nights.