There were lots of kids in my neighbourhood when I was growing up.

neighbourhood 是由名词 neighbour（邻居）加上后缀 -hood 构成的名词。后缀 -hood 表示"状态、性质、集体"，所以 neighbourhood 字面意思是"邻居们所处的状态或区域"，即"邻近地区、社区"。在美式英语中拼写为 neighborhood。