Nickel

From Rap Dictionary

noun

nickel

1. Five, as in 1995. "Everybody get in where ya fit in for tha nine five, tha nine nickel" -- Method Man with Capleton (Wings of the Morning).
2. Nickel also means $5 worth of something like weed or crack for example.
3. Another meaning for a bitch
4. Refers to the nickle plating of a firearm, or the firearm itself. "Hand on my nickle plated whistle." -- Clipse (Grindin')