noun
big round eyes; googly eyes
Describes eyes that are large, round, and often comically protruding, like those on a cartoon character or a toy. The グリグリ part suggests a rolling or bulging quality.
See also: ぐりぐり
そのぬいぐるみはグリグリ目玉がついていて、とてもかわいい。
That stuffed animal has big googly eyes and is very cute.
驚いてグリグリ目玉でこっちを見た。
Surprised, he looked at me with wide, round eyes.