If the machines in a factory or the items of equipment used by a firm are retooled, they are replaced or changed so that they can do new tasks. Each time the product changes, the machines have to be retooled. + retooling re·tool·ing Retooling, or recasting new toy moulds, is a slow and expensive process
provide (a workshop or factory) with new tools revise or reorganize, especially for the purpose of updating and improving; "We must retool the town's economy