Definition
Typically referring to the period between Friday evening and Sunday night, or specifically to Saturdays and Sundays.
周末
They often go hiking at weekends.
他们经常在周末去爬山。
I like to relax at weekends, reading a book or watching a movie.
我喜欢在周末放松，看书或看电影。
Our family usually has brunch together at weekends.
我们家通常会在周末一起吃早午餐。