1) Blew a whistle 2) Conveyed gas, water, etc 3) Conveyed via a conduit 4) Conveyed via conduit 5) Decorated with icing 6) Did a job in Hamelin 7) Emulated pan 8) Like church organs 9) Made like Pan 10) Played a fipple flute 11) Played flageolet 12) Played like Pan 13) Played the flute 14) Signaled boatswain style Found on https://www.crosswordclues.com/clue/piped