Definition of plus-one in English:

plus-one

Line breaks: plus-one

noun

informal
  • A person’s guest at a social function.
    More example sentences
    • You see, my plus one was visiting from out of town, so I had to take care of her.
    • Assuming I get in, I would love it if someone could be my plus one to accompany me to my FIRST prom ever.

More definitions of plus-one

Definition of plus-one in: