家宝 is read as かほう (kahou) and means heirloom.
かほう
kahou
でんかのほうとう
treasured family sword
でんかのほうとうをぬく
to employ one's secret weapon
かちく
domestic animals
いえなみ
row of houses
かていないぼうりょく
household violence (esp. adolescent children towards parents)
かしん
vassal
かぞくべつそうあたり
rule prohibiting match-ups between wrestlers from the same family
かもん
one's family
ちょうほう
(priceless) treasure
こくほう
national treasure
たから
treasure
しっぽう
cloisonne ware