eisteddfod: [19] An eisteddfod is literally a ‘session’ or ‘sitting’. It comes from the Welsh verb eistedd ‘sit’, a derivative of sedd ‘seat’, which goes back to the same Indo-European base (*sed-) as produced English sit and session. The final element, -fod, comes from the Welsh verb bod ‘be’. => session, sit[eisteddfod etymology, eisteddfod origin, 英语词源]