(as) clean as a (new) pin
US /əz kliːn əz ə njuː pɪn/
UK /əz kliːn əz ə njuː pɪn/

1.
brandschoon, spiksplinternieuw
very clean or neat
:
•
After she finished cleaning, the kitchen was as clean as a new pin.
Nadat ze klaar was met schoonmaken, was de keuken brandschoon.
•
His car is always kept as clean as a new pin.
Zijn auto wordt altijd brandschoon gehouden.