† box-slipn.Obsoleterare a slip of boxwood inlaid in the beechwood of some types of carpenters' planes in order to give durability to the edge.Apparently only attested in dictionaries.
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1874 E. H. KnightAmer. Mech. Dict. I. 352/2Box-slip.., a slip of box inlaid in the beechwood of a tongueing, grooving, or molding plane, in order that the edge or the quirk may possess greater durability.