What is "plectrums"

Usage examples of "plectrums".

I’ve spent the last three years recalibrating the jacks, upgrading the plectrums, and adjusting the strings.

He listened with barely concealed impatience as the man demonstrated a musical instrument fashioned so that its strings were plucked by plectrums fashioned from multicolored fangs, enspelled so that the resulting sound could imitate nearly anything the musician wished.