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