Definition: A biological organ of vertebrates that controls breathing and oxygenates the blood.

Alright class, settle down now, let’s take a look! You’ve got your dictionaries handy, which is splendid and bright, And you’ve found a definition – let's see if it feels right. “A biological organ of vertebrates that controls breathing…” That’s part of the key, It helps us to inhale, for all the world to see! “…and oxygenates the blood,” now listen close and slow, The lung’s important job is letting oxygen flow. So, what does 'lung' mean? Let me put it plain, It’s a vital organ – again and again! Think of it like this: your lungs take in the air, And give your blood the oxygen that it needs to share. They work so hard, you see, a marvelous feat, Keeping us alive and wonderfully complete! Do you have any questions about this amazing part? Let's discuss with a thoughtful heart!