cereal killer cere-al kill-er noun Any food product that challenges the dominance of breakfast cereal. Examples include eggs, fruit salad and hash browns. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Like this:Like Loading... Related