English: parting bead
Welsh: rhimyn gwahanu
Subject: Ystadau a Cadw
English definition: A narrow vertical strip of wood at the centre of the pulley stile of a sash box, which keeps the top and bottom sashes apart, and allows them to slide past each other; removable for maintenance of the upper sash.
Welsh definition: Stribyn cul fertigol o bren yng nghanol ystyllen bwli y ffrâm flwch, sy’n cadw’r fframiau uchaf ac isaf ar wahân, a sy’n caniatáu iddynt lithro heibio i’w gilydd; gellir eu tynnu er mwyn cynnal a chadw’r ffrâm uchaf.
Welsh context: Ffynhonnell: Taflen wybodaeth gyhoeddus Cyngor Gwynedd.