- 1[uncountable, countable] a white carbohydrate food substance found in potatoes, flour, rice, etc.; food containing this There's too much starch in your diet. You need to cut down on starches.
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- 2[uncountable] starch prepared in powder form or as a spray and used for making clothes, sheets, etc. stiff Spray starch on the shirt collars before ironing them.
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