Definition
Indicates the complete absence of anything.
什麼都沒有
I searched the entire room, but I didn't find a single thing.
我搜遍了整個房間，但沒有找到任何東西。
He opened the refrigerator and found not a single thing inside.
他打開冰箱，發現裡面沒有任何東西。
I checked my pockets, and there wasn't a single thing in them.
我檢查了我的口袋，裡面沒有任何東西。