13:50Hanes yr Iaith Mewn 50 GairClochBBC Radio Cymru Duration: 10 o funudau Sun 1st Jan 2017, 13:50 on BBC Radio CymruAvailable for over a yearGwrando nawrIfor ap Glyn yn edrych ar darddiad y gair 'cloch'. Ifor ap Glyn explores the 'cloch', the Welsh word for 'bell'.GenresFactualSeriesHanes yr Iaith Mewn 50 Gair Source: BBC Online