"A Grip" - An large amount of a particular item (ex; time, money, and/or female ass). Originated with hustlers counting their cash with how much would fit between your thumb & index finger (grip). Then it evolved into describing any item of large a value/quantity.
1. That BMW must have cost a grip!
2. It's been a grip since I cruised the shaw.
3. Keisha has a grip of ass!