noun

• (nonstandard, common in China) Alternative form of app.
• (in street addresses) Abbreviation of approach.
  "10 Station App"

noun

• (computing, mobile telephony) An application (program), especially a small one designed for a mobile device.
  "A visual tool can be thought of as a graphics app that generates most of your program's GUI code for you"
• (military) application (use, purpose; not a computer program)
  "SCULLY: What are these chips used for? PENDRELL: Video games, brake systems, they're finding new apps every day. I just read about one being designed to help the severely disabled operate computers using brainwaves."
• (education, informal) application (to a college etc.)
  "“Ky—please don't take this the wrong way—I actually have to wear a dress from our line. You know, to show off my marketing materials on my college app. So, I'm working on it with Hannah.”"

noun

• (informal) appetizer
  "The food is some of Breck's best: apps like sweet potato gnocchi with smoked chicken and sage cream[…]"

noun

• (sports) An appearance in a game.
  "That player has had ten apps this season."