make-and-break adjective & noun. [meɪk(ǝ)nd'breɪk] M19.
[from MAKE verb + AND conjunction¹ + BREAK verb (sc. contact).]
A. adjective. That alternately makes and breaks electrical contact. M19.
b. noun.
1. The alternate making and breaking of electrical contact. E20.

2. An apparatus for automatically making and breaking electrical contact. E20.

[TahlilGaran] English Dictionary ▲