1. n. a secret financier. I was hoping for an angel to see this project through, but all the fat-cats seem to have disappeared.
2. n. a sweetheart. (Also a term of address.) Okay, angel, let’s get in the car.
3. n. a sniper hiding in a high place, such as on the roof of a building. The guards looked upward, watching for angels.
4. n. 1,000 feet of altitude, in flight. At about eighteen angels, we began to level out.