Sentence:  As a teenager I hitch-hiked around free rock concerts, wearing flowered shirts and denim <WSD>flares</WSD> – jeans that were worn so much, in such rough conditions, and with so little attention to washing and care that after a while they became naturally abraded and frayed in just the manner that is simulated by commerce today. 
Meaning of the word marked with <WSD> tags:  Bell-bottom trousers.