from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A mixture of high-energy foods, such as nuts and dried fruit, eaten as a snack.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A loose mixture of dried fruit, nuts, frequently salt, and sometimes other ingredients; designed as an energy supplement while hiking, climbing, canoeing, etc.
Origin unknown.(American Heritage® Dictionary of the English Language, Fourth Edition)
The Oxford English Dictionary cites a 1913 reference to the verb "gorp", meaning "to eat greedily". The occasionally theorised good old raisins and peanuts is probably a backronym. (Wiktionary)