A "plectrum" is a "pick". It's probably an irrelevant term as far as any player is concerned, since you can use your fingers, a pick or a ballpeen hammer to rattle the strings if you like. I think marketing people just come up with adjectives because they're compulsively hyperbolic.

Frank in the superlatively sweaty, steamy 'skeeter infested, festering, sloggy sloshy swamps.