The American Heritage® Dictionary of the English Language, 4th Edition
n. A game of skill, especially among lumberjacks, in which two competitors try to balance on a floating log while spinning it with their feet. Also called logrolling.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. rotating a log rapidly in the water (as a competitive sport)
Word Usage
"Contests were based on the ability to balance on a floating log and spinning it with one’s feet, while throwing off an opponent a skill known as birling, or logrolling."