Gourmand – A person who enjoys eating and often eats too much
He gorges on diamonds (gourmand). He enjoys eating them but often eats too much.
Examples of gourmand in a sentence
The pub sold freshly caught fish, there are numerous choices for the gourmand to get exactly what he wants.
She spent all her money at restaurants, she really was a gourmand.
I used to be a picky eater, but now I'm an adult I think gourmand is a better description of who I am.