Z, z
noun [ C or U ] uk/zed/ us/ziː/ Zs, Z's or z's
（英语字母表的第26个字母）
the 26th and last letter of the English alphabet
Idiom
catch/cop/get some z'sidiom US informal 睡觉
to sleep
All I want to do is go home and catch some z's. 我就只想回家去睡上一会儿。