Definition of gwyniad in English:
A powan (fish) of a variety occurring only in Bala Lake in North Wales.
- Basically, the gwyniad was left behind when the Ice Age ended and has been lake-locked at Bala ever since.
- This small, aggressive fish congregates around the gwyniad spawning areas and eats the eggs and young fish.
- The lake is inhabited by the gwyniad, a white fish of the salmon family unique to Llyn Tegid.
early 17th century: Welsh, from gwyn 'white'.