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lum·ber 1

1. Timber sawed into boards, planks, or other structural members of standard or specified length.
2. Something useless or cumbersome.
3. Chiefly British Miscellaneous stored articles.
v. lum·bered, lum·ber·ing, lum·bers
a. To cut down (trees) and prepare as marketable timber.
b. To cut down the timber of.
2. Chiefly British To clutter with or as if with unused articles.
To cut and prepare timber for marketing.

[Perhaps from lumber.]

lum′ber adj.
lum′ber·er n.

lum·ber 2

intr.v. lum·bered, lum·ber·ing, lum·bers
1. To walk or move clumsily or heavily. See Synonyms at blunder.
2. To move with a rumbling noise.

[Middle English lomeren, possibly of Scandinavian origin; akin to Swedish dialectal loma, to move heavily.]

lum′ber·ing·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Crewmen gave it a host of nicknames, among them the 'Flying Duck,' the 'Flying Boxcar' and the 'Constipated Lumberer,' a play on Consolidated Liberator.
His wins were as follows: First day: Stand Plate (9 runners), Rowallan, 100-8; Champagne Stakes (5), Solero, 10-1; Great Yorkshire Handicap (16), Bushey Park, 100-12; Doncaster Welter (13), Lumberer, 100-8.
Bill Harsey is known for his tactical designs, but his many years as a hunter and lumberer in the Pacific Northwest has given him insight into designing knives for a wide variety of duties.
Fortunately, or unfortunately as we may happen to regard it, the tendency of our rime is all in the direction of laying bare to inspection and open to exploitation, all parts, however remote, of this comparatively small world in which we live, and though the explorer himself may be impelled by a certain romanticism in overcoming difficulties or even dangers met with in the execution of his task, his steps are surely and closely followed by the trader, the lumberer, or the agriculturalist, and not long after these comes the builder of railways with his iron road (Dawson 1890, 29).
This was the readable, or reading matter, in a lumberer's camp in the Maine woods, thirty miles from a road, which would be given up to the bears in a fortnight.
It was as if we sucked at the very teats of Nature's pine-clad bosom in these parts,--the sap of all Millinocket botany commingled,--the topmost, most fantastic, and spiciest sprays of the primitive wood, and whatever invigorating and stringent gum or essence it afforded steeped and dissolved in it,--a lumberer's drink, which would acclimate and naturalize a man at once,--which would make him see green, and, if he slept, dream that he heard the wind sough among the pines.
Unfortunately, though, the Anfield lumberer is earmarked for the left side of midfield instead.