English: lintel
Welsh: lintel
Subject: Ystadau a Cadw
English definition: A beam over an opening in a wall supporting masonry above. 
Welsh definition: Trawst dros agoriad mewn mur sy’n cynnal y gwaith cerrig uwch ei ben.
Welsh context: Ffynhonnell: Taflen wybodaeth gyhoeddus Cyngor Gwynedd.