"Waiting 'round the bend" probably means the bend of the river. Here's part of an an article that addresses the meaning of "huckleberry friend": People have sometimes asked about the meaning of the phrase "huckleberry friend". As a child, Mercer picked huckleberries (like wild blueberries) in the summer. To him, the berries had a personal connection with a carefree boyhood, strengthened by association with Mark Twain's character Huckleberry Finn. The implication was that Holly Golightly, who was actually of hillbilly stock, and Huckleberry Finn might well have been friends, if ever they had met. From http://www.telegraph.co.uk/culture/music/3561782/The-story-behind-the-song-Moon-River.html