breadboard

noun

board of holes that allows for electronics to be wired without soldering

Wiktionary

noun

Etymology: From bread + board. Regarding definition 3: the etymology is either that electric circuits used to be prototyped on actual bread boards (definition 1) populated with nails, or that solder breadboards have lots of holes and are usually brown (they visually resemble a slice of bread), or a merging of the two. The etymology is less obvious today given the popularity of solderless breadboards.

A cutting board, especially for cutting bread.
A pull-out cutting board underneath a counter, found in many kitchens.
“One way or the other, it was always back to Mother's breadboard on Monday.”
A device used to build a (usually temporary) prototype of an electronic circuit and for experimenting with circuit designs. Both solder and solderless versions are available; the solderless type are easily reusable.
“If you are following a book like Starting Electronics, however, a breadboard is even more useful. […] Differences lie between breadboards in the spacings and the positionings of the holes, and the number of holes in each group.”

verb

To set up (an electronic device) on a breadboard.
“If the breadboarded circuit operates incorrectly or erratically, try relocating some of the components.”
“There are many commercial breadboarding systems, but almost all of them are designed to facilitate the breadboarding of digital systems, where noise immunities are hundreds of millivolts or more.”