We found 2 dictionaries that define the word difficult run:

General (2 matching dictionaries)

1. Difficult Run, Difficult Run: Wikipedia, the Free Encyclopedia

Definitions from Wikipedia (Difficult Run) ▸ noun:  a U.S. Geological Survey. ▸ Words similar to difficult run ▸ Usage examples for difficult run ▸ Idioms related to difficult run ▸ Wikipedia articles (New!) ▸ Words that often appear near difficult run ▸ Rhymes of difficult run ▸ Invented words related to difficult run