timber

(uncountable) Trees in a forest regarded as a source of wood.

(outside Canada, US, uncountable) Wood that has been pre-cut and is ready for use in construction.

(countable) 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.

(firearms, informal) The wooden stock of a rifle or shotgun.

(archaic) 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.