/ ˈlʌmbə(r); NAmE / noun , verb
■ noun [ U ]
1.
( especially NAmE ) = timber
2.
( BrE ) pieces of furniture, and other large objects that you do not use any more :
a lumber room (= for storing lumber in)
■ verb
1.
[ v + adv. / prep. ] to move in a slow, heavy and awkward way :
A family of elephants lumbered by.
2.
[ vn ] [ usually passive ] lumber sb (with sb/sth) ( informal ) to give sb a responsibility, etc., that they do not want and that they cannot get rid of :
When our parents went out, my sister got lumbered with me for the evening.
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WORD ORIGIN
verb sense 1 late Middle English lomere , perhaps symbolic of clumsy movement.
verb sense 2 and noun mid 16th cent.: perhaps from lumber move slowly and awkwardly ; later associated with obsolete lumber pawnbroker's shop .