lightbulbs

/L AY1 T B AH0 L B Z/
noun
  1. 1

    An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.

  2. 2

    (by extension) An article that resembles such a bulb and converts electricity to light by any process.

    โ€œa fluorescent light bulbโ€

  3. 3

    Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like.

    โ€œa light bulb momentโ€

noun
  1. 1

    An uninvited third person joining a couple's date who prevents or hinders romantic interactions.

Source: https://en.wiktionary.org/wiki/light%20bulb, https://en.wiktionary.org/wiki/lightbulb, https://en.wiktionary.org/wiki/lightbulbs