Timber meaning : Trees in a forest regarded as a source of wood. (outside North America) Wood that has been pre-cut and is ready for use in construction. A heavy wooden beam, generally a whole log that has been squared off and used to provide heavy support for something such as a roof. Material for any structure. The wooden stock of a rifle or shotgun. A certain quantity of fur skins (as of martens, ermines, sables, etc.) packed between boards; in some cases forty skins, in others one hundred and twenty. Also timmer, timbre. To fit with timbers. To construct, frame, build. To light or land on a tree. To make a nest. To surmount as a timber does. Used by loggers to warn others that a tree being felled is falling.