Common Meanings
1
niào尿
urine; a liquid waste product expelled from the body
婴儿需要换尿布了。
The baby needs a diaper change.
to urinate; to pee
小狗在树下尿尿。
The puppy is peeing under the tree.
2
suī尿
Bladder (in the term '尿脬', pronounced 'suī pāo').
他的尿脬很胀，需要赶紧上厕所。
His bladder is very full; he needs to go to the toilet quickly.