腎の臓

(1)either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; "urine passes out of the kidney through ureters to the bladder"

(2)血液から排泄物を濾過し（特に尿素）、それらを排泄し水分の中に分泌液を出す2つの豆形の排泄器官のどちらか

(1)