pyjamayoudaoicibaDictYouDict[pyjama 词源字典]
pyjama: [18] Pyjamas are etymologically ‘leggarments’ – that is, ‘trousers’. The word comes from Hindi pāejāma, a compound formed from Persian pāī ‘foot’, hence ‘leg’ (which goes back to the same Indo-European ancestor as English foot) and jāmah ‘clothing’. It denoted the loose trousers worn in India and the Middle East. Europeans living in that part of the world took to wearing them, especially for sleeping in. They brought them back to Europe, where, for reasons of temperature or propriety, a jacket was added to the trousers, in due course being subsumed under the term pyjama.
=> foot, pedal[pyjama etymology, pyjama origin, 英语词源]