He brooded with relish, in profound secret, over
the image of a girl

What's the meaning of brood here?
And is relish an adjective here?

Question

He brooded with relish, in profound secret, over
the image of a girl

What's the meaning of brood here?
And is relish an adjective here?

Answer

Brood means to think a lot about something that makes you annoyed, anxious or upset.
Relish is a noun here which means great enjoyment or pleasure.