trilby
Concise Oxford English Dictionary © 2008 Oxford University Press:
trilby/ˈtrɪlbi/
▶noun (pl. trilbies) chiefly Brit. a soft felt hat with a narrow brim and indented crown.
– derivatives
trilbied adjective.
trilbied adjective.
– origin C19: from the name of George du Maurier's novel Trilby (1894), in the stage version of which such a hat was worn.
'trilby' also found in these Oxford entries:

