Meaning of make-and-break

make-and-break

Pronunciation: (māk'un-brāk'), [key]
— adj.
  1. noting or pertaining to a device, operated by an electric current, for automatically opening or closing a circuit once it has been closed or opened by a mechanical springlike device, as in a doorbell.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.