ˌsecond ˈhome BrE AmE noun
1 . [countable] a house or apartment that you own as well as your main home and which you use, for example, for holidays:
town-dwellers who buy second homes in the countryside
2 . [singular] a place where you spend a large amount of time but which is not where you live:
I love Italy. It’s my second home.
From then on, the hospital became my second home.