Whether a dinner outing between two eleven-year-old friends, a boy and a girl, with their parents present, counts as a "date" depends on the context and the intentions of those involved. At the age of eleven, children are generally not yet involved in romantic relationships or dating in the way that teenagers or adults might be.
In most cases, an outing between two young friends of opposite genders, accompanied by their parents, would simply be considered a friendly get-together or a group outing rather than a date. The presence of parents indicates that it is likely a social gathering for friendship and not a romantic date.
Children at this age often form friendships based on shared interests and common activities. It is essential to encourage healthy and positive friendships without rushing them into more complex romantic relationships before they are developmentally ready.
In summary, an outing between two eleven-year-old friends, boy and girl, with parents present, would typically be seen as a friendly gathering or outing rather than a formal date.