Dolly Varden
Concise Oxford English Dictionary © 2008 Oxford University Press:
Dolly Varden /ˈvɑːd(ə)n/
▶noun
- 1 a large hat with a floral trimming and one drooping side, formerly worn by women.
- 2 a brightly spotted edible charr (fish) of western North America. [Salvelinus malma.]
– origin C19: from the name of a character in Dickens's Barnaby Rudge, who wore a similar hat.
'Dolly Varden' also found in these Oxford entries:

