one's personal thoughts

private life, personal life

illegitimacy (being born out of wedlock)

a privately-owned ricefield, especially one under the historical 律令 (Ritsuryō) system

personal grudge

Kyūjitai form of 私鉄 (“private railway”)

Alternative spelling of サントドミンゴ

(respectful) (someone else's) parents

(dated) San Diego (a city in California, United States)

The hiragana syllable ご (go). Its equivalent in katakana is ゴ (go).