biggie

/B IH1 G IY0/
noun
  1. 1

    Something large in size in comparison to similar things.

    โ€œThe wardrobe is the biggy โ€“ we'd better move that first.โ€

  2. 2

    Something impressive in comparison to similar things.

    โ€œHere's the biggy: she's only getting divorced!โ€

  3. 3

    (chiefly in the negative) Big deal.

    โ€œ- Dude, I forgot to return your book!โ€

  4. 4

    (originally US) A person of importance or power, especially in the entertainment industry.

Source: https://en.wiktionary.org/wiki/biggie, https://en.wiktionary.org/wiki/biggy