The quality of being a neighbor, of living nearby, next to each-other; proximity.
Our neighborhood was our only reason to exchange hollow greetings.
Close proximity, nearby area; particularly, close proximity to one's home.
He lives in my neighborhood.
The inhabitants of a residential area.
The fire alarmed the neighborhood.
A formal or informal division of a municipality or region.
We have just moved to a pleasant neighborhood.
An approximate amount.
He must be making in the neighborhood of $200,000 per year.
The quality of physical proximity.
The slums and the palace were in awful neighborhood.
The disposition becoming a neighbor; neighborly kindness or good will.
Within a topological space:
Within a metric space:
The infinitesimal open set of all points that may be reached directly from a given point.
The set of all the vertices adjacent to a given vertex.