The noun timber has 5 senses (first 3 from tagged texts)
1. (3) lumber, timber -- (the wood of trees cut and prepared for use as building material)
2. (2) timber -- (a beam made of wood)
3. (1) timber -- (a post made of wood)
4. forest, woodland, timberland, timber -- (land that is covered with trees and shrubs)
5. timbre, timber, quality, tone -- ((music) the distinctive property of a complex sound (a voice or noise or musical sound); "the timbre of her soprano was rich and lovely"; "the muffled tones of the broken bell summoned them to meet")