Meaning of TIMBER in English

TIMBER

/ ˈtɪmbə(r); NAmE / noun

1.

[ U ] trees that are grown to be used in building or for making things :

the timber industry

2.

[ U ] ( especially BrE ) ( NAmE usually lum·ber ) wood that is prepared for use in building, etc. :

houses built of timber

3.

[ C , usually pl. ] a long heavy piece of wood used in building a house or ship :

roof timbers

4.

timber! used to warn people that a tree that has been cut is about to fall

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WORD ORIGIN

Old English in the sense a building , also building material , of Germanic origin; related to German Zimmer room, from an Indo-European root meaning build.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.