和英辞書

いどこ

pron

(archaic, obsolete) indefinite interrogative pronoun: where, whence, whither, which / (archaic, obsolete, after a particle) indefinite demonstrative pronoun: anywhere, everywhere, somewhere

いどこに行くのですか？

Where are you going?

意味（1）

(archaic, obsolete) indefinite interrogative pronoun: where, whence, whither, which

おもしろき所(ところ)に船(ふね)を寄(よ)せて「ここやいどこ」と問(と)ひければ「土(と)佐(さ)の泊(とまり)」と言(い)ひけり。

Omoshiroki tokoro ni fune o yosete, “koko ya idoko,” to toikereba, “Tosa-no-tomari” to iikeri.As the boat arrived at some fascinating place I asked, “Whither here?” He said, “Tosa Harbor”.

意味（2）

(archaic, obsolete, after a particle) indefinite demonstrative pronoun: anywhere, everywhere, somewhere