Refers to a target or purpose one has in mind; often used in phrases like あてどなく (aimlessly) or あてどもなく (without a clear goal).
He wandered aimlessly through the streets.
Set off on a journey with no particular destination.
Usually written in kana; the kanji forms 当て所 and 当てど are rare and may not be recognized by all readers.
Rare kanji spelling; the reading あてど is not obvious from the kanji.
Mixed kanji-kana spelling; also rare.
From 当て, “aim” or “expectation,” and 所, “place” or “destination,” with voicing of と to ど in the compound.