Definitionen
1.NounAn introductory or preliminary performance or event.
2.NounA short, free-form piece of music, originally one serving as an introduction to a longer and more complex piece; later, starting with the Romantic period, generally a stand-alone piece. .mw-parser-output .defdate{font-size:smaller}
3.NounA standard module or library of subroutines and functions to be imported, generally by default, into a program.
4.NounA forerunner to anything.
5.VerbTo introduce something, as a prelude.
6.VerbTo play an introduction or prelude; to give a prefatory performance.