New and Used American Eagle RVs For Sale. Current American Eagle inventory - find local, new and used listings from private RV owners and dealers. American Coach American Eagle (79)
Definition of evolve for English Language Learners. : to change or develop slowly often into a better, more complex, or more advanced state : to develop by a process of evolution.
Contribute to our Open Dictionary. 1  1. the way that a situation keeps changing between two states, for example in a game, fight, or argument the ebb and flow of debate. 2  2. a situation in which something keeps becoming larger or stronger, and then smaller or weaker the ebb and flow of their political power.