寡居 is read as かきょ (kakyo) and means widowhood.
かきょ
kakyo
かふ
widow
かもく
untalkative
かせん
oligopoly
かさく
unprolific (writer, artist, etc.)
かとうせいじ
oligarchy
かせんかかく
oligopoly price
かとうせい
こうぎょ
Imperial Palace (of Japan)
しばい
play
しきい
threshold (esp. one with grooves for sliding doors)
いんきょ
surrendering headship of the family (pre-WWII)
かみしばい
kamishibai