Definition: An organ in the body that filters the blood, producing urine.

Alright class, settle down and let’s take a look, At this word we’re studying, a biological nook! “Kidney,” it says, in the dictionary bright, Let's break it down gently, with all of our might. It tells us it’s an organ, quite clever and true, Working hard inside you, just for me and for you! Think of your blood, a river flowing free, Full of things that need cleaning, you see? The kidney's job is to filter, clean with care, Removing the waste, beyond compare. Like a little machine, efficient and keen, It scrubs all the toxins, unseen! And as it cleanses, it makes something new, A liquid called urine, for you to pursue – (Meaning, you know, it leaves your body too!) So remember this lesson, clear and concise, The kidney’s a worker, incredibly nice! Do you have any questions? Let's discuss with glee, Now who can tell me, what does a kidney do for thee?