noun
clientele; customer base; type of customers
Refers to the collective character, quality, or type of customers a business attracts, often used in commercial contexts.
この店は客筋がいいので、トラブルが少ない。
This shop has a good clientele, so there are few problems.
新しい広告で客筋が変わった。
The new advertisement changed the type of customers we get.