A voiced form of رَسَخَ (rasaḵa, “to be fixed, to sink in”) from the root ر س خ (r s ḵ) or similar, with the rest of the formations within the root ر س غ (r s ḡ) being secondary to the present anatomical term.
Practica hablar y memorizar " رسغ " y muchas otras palabras y oraciones en Arabic .