• 尿にょう — urine; pee
• 尿意にょうい — urge to urinate
• 尿検査にょうけんさ — urine test; urinalysis
• 血尿けつにょう — blood in the urine
• 夜尿やにょう — nighttime bedwetting
• 排尿はいにょう — urination; passing urine

The kanji 尿 combines the “corpse” or “body” radical 尸 with a shape suggesting liquid flowing down. Together it points to liquid coming out of the body — in other words, urine. Today it’s a straightforward medical and technical kanji, used in words for tests, symptoms, and body functions.