n. One of a long series of boards laid as a path across wet or muddy ground; normally used in plural.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a boardwalk laid across muddy ground
Word Usage
"The old army quartermaster in charge of the warehouses feared he would be court-martialed after the war if all the duckboard could not be accounted for."