A biological elevator, its passengers water and sugar. Or a category for the maths and sciences.

Thin and gravely, that’s my name The gravely part might give you pain

I can be in your body I can rule your mind I exist in many forms But when I grow too great, I can leave you blind

I have a body, a neck, and nuts. I produce great sound too.

I can ride, crash, or splash with a ring My homophone quite literally stands for something If Mike Tyson said me, I'm no longer a drum As he'd name something used when sewing to protect your thumb