expression, noun
my home; my family
Colloquial, feminine contraction of あたしのうち. Used in casual speech, often by young women or in manga/anime. Can refer to one's house or household.
あたしんち、駅から遠いんだよね。
My place is far from the station, you know.
あたしんちはみんな早起きなの。
My family are all early risers.