Definition: (underwater diving) An apparatus carried by a diver, which includes a tank holding compressed, filtered air and a regulator which delivers the air to the diver at ambient pressure which can be used underwater.

Alright class, settle down now, let’s dive in with a bow! We're tackling ‘scuba’ today, it’s quite a clever play. The dictionary tells us, clear as you please, It’s “underwater diving,” if you want to appease! Think of a diver, brave and bold, Exploring oceans, stories untold. They need an apparatus, a tool so grand, To help them breathe beneath the sand! This ‘scuba’ system – it's quite a feat, With a tank of air, incredibly sweet! Compressed and filtered, you see, Keeping our divers happy and free. And then there’s a regulator, don't you know? It delivers the air, nice and slow. At ambient pressure, just right for the dive, So they can explore, truly alive! So "scuba" – it means “self-contained underwater breathing,” my dears! Any questions about this fascinating gear? Let’s discuss them here!