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English definition of “lumber”

lumber

verb [I usually + adv/prep] uk   /ˈlʌm.bər/ us    /-bɚ/
to move slowly and awkwardly: In the distance, we could see a herd of elephants lumbering across the plain.Moving unsteadily or with difficulty
Phrasal verbs

lumber

noun [U] uk   /ˈlʌm.bər/ us    /-bɚ/ mainly US
C2 wood that has been prepared for buildingTypes of wood
(Definition of lumber from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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