H is for Humbucking
Sounds like it could be some sort of rural pursuit in medieval England ("Let's go a-humbucking upon a moonlit night"). Or a Humbucker could be some sort of vicious steampunk flying insect. But, of course, it's actually a type of pick-up on an electric guitar.
The pick-up is the thing that converts the vibrations of the strings into electrical signals. Which can then be amplified. Possibly a lot. Humbuckers are so called because they use two coils rather than one to help cancel out or "buck" the hum often associated with single-coil pickups. All I can say is, they still make a racket when I use them ...
Archaeopteryx Blunderbuss Chthonic Dreadnought Entropy Fulgurite Gargantua Humbucking