18:50Hanes yr Iaith Mewn 50 GairTirBBC Radio Cymru Duration: 5 o funudau Thu 15th Jun 2017, 18:50 on BBC Radio CymruAvailable for over a yearGwrando nawrIfor ap Glyn yn edrych ar darddiad a datblygiad y gair 'tir'. Ifor ap Glyn explores tir, the Welsh word for land.GenresFactualArts, Culture & the MediaSeriesHanes yr Iaith Mewn 50 Gair Source: BBC Online