noun
- a breakfast food consisting of rolled oats, brown sugar, nuts, dried fruit, etc., usually served with milk.
noun
- US and Canadian a mixture of rolled oats, brown sugar, nuts, fruit, etc, eaten with milk
1970, American English, probably from Italian grano “grain,” or from granular, with commercial suffix -ola. Earlier, with a capital G-, it was a proprietary name (reg. 1886 by W.K. Kellogg, in use into early 20c.) for a kind of breakfast cereal.