- Improvised verses in Welsh sung to the accompaniment of a harp, especially in contest at an eisteddfod: [as modifier]: penillion singingMás ejemplos en oraciones
- Penillion is soaked in the Welsh tradition of improvised vocal descants to the harper's melody.
- Penillion singing therefore allows both the vocalist and the musician to ply their skills within their own frameworks.
- Pennillion singing is generally a subject in musical competitions.
Welsh, literally 'stanzas', from pen 'head'.