The Collaborative International Dictionary of English v.0.48:
Lar \Lar\ (l[aum]r), n.; pl. Lares, sometimes Lars. [L.]
A tutelary deity; a deceased ancestor regarded as a protector
of the family. The domestic Lares were the tutelar deities of
a house; household gods. Hence, (Fig.): Hearth or dwelling
Nor will she her dear Lar forget,
Victorious by his benefit. --Lovelace.
The Lars and Lemures moan with midnight plaint.
Looking backward in vain toward their Lares and lands.