noun
going elsewhere; going out
Refers to the act of going to another place, often with a nuance of dressing up or behaving formally for an outing.
彼女は他所行きの服に着替えた。
She changed into her going-out clothes.
今日は他所行きだから、ちゃんとした靴を履いていこう。
Since we're going out today, let's wear proper shoes.
noun
travelling afar with one's client (of a geisha, etc.)
Historical term used in the geisha and courtesan world for accompanying a client on a trip away from the usual entertainment district.
江戸時代、芸者は旦那と他所行きをすることがあった。
In the Edo period, geisha sometimes travelled afar with their patrons.