What is the meaning of गार्हपत्य?

One of the three sacred fires perpetually maintained by a householder, which he receives from his father and transmits to his descendants, and from which fires for sacrificial purposes are lighted; अथ हैनं गार्हपत्योऽनु- शशास (atha hainaṃ gārhapatyo'nu- śaśāsa) Ch. Up.4.11.1; cf. Manusmṛti 2.231.

Source: wiktionary.org