washing soda
nounUK /ˈwɒʃɪŋ ˌsəʊdə/
US /ˈwɑːʃɪŋ ˌsoʊdə/
A white powder that people use to clean things.
Mom added washing soda to the water to help clean the dirty clothes.
OTHER MEANINGS
2. A chemical used to soften water so soap works better.
The washing soda made the hard water softer for the soap.
3. A powder used in some recipes and science experiments.
We used washing soda to grow shiny crystals in science class.
4. A substance that can help remove stains from fabric.
She sprinkled washing soda on the stain before washing the shirt.