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English definition of “two-by-four”

two-by-four

noun [C or U] uk   /ˌtuː.baɪˈfɔːr/ us    /-ˈfɔːr/
a standard size of finished wood used for building that measures slightly less than two inches wide and four inches deep and can be cut to various lengths, or wood of this size: You'll need four eight-foot two-by-fours to frame out that wall. a two-by-four boardBuilding materials
(Definition of two-by-four from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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