lightbulb

noun

1. (alt-of, alternative)Alternative spelling of light bulb.

   “A young orangutan in the San Diego Zoo became famous for unbolting the screening of his crib, removing the wires, and moving through the zoo nursery, unscrewing lightbulbs.”

2. (Singapore, colloquial)An uninvited third person joining a couple's date who prevents or hinders romantic interactions.

   “You two go ahead lah, I don't want to be lightbulb.”

   “When she finally came out her friend joined us. Damn lightbulb leh!”

   “Being an extra big light bulb and eating with two cousins and their husband and fiance.”