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

1.
sạch bong kin kít, sạch như mới
very clean or neat
:
•
After she finished cleaning, the kitchen was as clean as a new pin.
Sau khi cô ấy dọn dẹp xong, nhà bếp sạch bong kin kít.
•
His car is always kept as clean as a new pin.
Xe của anh ấy luôn được giữ sạch bong kin kít.