Sentence:  At the flick of a switch I would change mode and tart up in my new Toby, a horrendous copy of a Savile Row suit, waisted, with a twelve-inch vent at the back, <WSD>drainpipe</WSD> trousers and a rose in my buttonhole. 
Meaning of the word marked with <WSD> tags:  A type of form-fitting trousers with highly tapered legs.