nimbus
Concise Oxford English Dictionary © 2008 Oxford University Press:
nimbus /ˈnɪmbəs/
▶noun (pl. nimbi /-bʌɪ/ or nimbuses)
- 1 a large grey rain cloud.
- 2 a luminous cloud or a halo surrounding a supernatural being or saint.
– origin C17: from L., lit. ‘cloud, aureole’.
'nimbus' also found in these Oxford entries:

