Synonyms for Recorder (same or very similar meaning)
WordNet sense 1 (someone responsible for keeping records):
registrar, record-keeperWordNet sense 2 (equipment for making records):
recording equipment, recording machineWordNet sense 3 (a woodwind with a vertical pipe and 8 finger holes and a whistle mouthpiece):
fipple flute, fipple pipe, vertical fluteFrom the ODE community, based on WordNetadd/edit