An action, event, or work that, in it's totality, elicits the facial or emotional response of "awe" from the viewer.
Astonishment at the grandiosity or quality of the entity, not "aw" at it's cute face.
A compliment.
This version of the spelling avoids confusion by learners of the language one might encounter when considering the juxtaposition of "awesome," or "awe at something."