Frombasin +‎-like.

basinlike (comparativemorebasinlike,superlativemostbasinlike)

1. Resembling or characteristic of abasin.
   • 1989, Barbara L Stark,Patarata pottery:

     There are two wide, convex walled vessels, probably abasinlike form, one of which has a looped handle set vertically on the rim[…]

• Bielanski