Sgiwsiwch fi am gamddefnyddio&#39;r cylch - ond mae hi&#39;n ddydd Sadwrn - <br><h6 class="uiStreamMessage"><span class="messageBody">Be ydy tarddiad y gair &quot;andros&quot;? - cwestiwn gan ffrind. Erbyn meddwl, mi fasa&#39;n ddiddorol gwbod. Diolch</span></h6>
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