Dictionary
shim
Pronunciation: (shim), [key]
—n., v., shimmed, shim•ming.
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n.
a thin slip or wedge of metal, wood, etc., for driving into crevices, as between machine parts to compensate for wear, or beneath bedplates, large stones, etc., to level them.
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v.t.
to fill out or bring to a level by inserting a shim or shims.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.