Sentence:  One aim of the move <small>[from Nine Elms]</small> had been to speed up the <WSD>overhaul</WSD> of the company's locomotive stock and to reduce costs with more efficient workshop facilities, in what Dugald Drummond claimed to be "the most complete and up-to-date works owned by any railway company". 
Meaning of the word marked with <WSD> tags:  A major repair, remake, renovation, or revision.