washing powder
US /ˈwɑː.ʃɪŋ ˌpaʊ.dər/
UK /ˈwɑː.ʃɪŋ ˌpaʊ.dər/

1.
a powdered detergent used for washing clothes
:
•
I need to buy some more washing powder for the laundry.
•
She put a scoop of washing powder into the machine.
a powdered detergent used for washing clothes