Words and Proper Names

ríched

2196.
Stifter (David): Altirisch ríched ‘christlicher Himmel’.
In 3. Deutsches Keltologensymposium (2004), pp. 81–94.
Suggests < PCelt. *riketom < PIE *h1r̥k-eto- ‘the shining thing’ (< PIE * √h1erk ) ‘shine, sing’.