The Collaborative International Dictionary of English v.0.48:

Lar \Lar\ (l[aum]r), n.; pl. Lares, sometimes Lars. [L.]
   (Rom. Myth.)
   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
   house.
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         Nor will she her dear Lar forget,
         Victorious by his benefit.               --Lovelace.
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         The Lars and Lemures moan with midnight plaint.
                                                  --Milton.
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         Looking backward in vain toward their Lares and lands.
                                                  --Longfellow.
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