I. flour 1 /flaʊə $ flaʊr/ BrE AmE noun [uncountable]
[ Date: 1200-1300 ; Origin: ⇨ ↑ flower 1 'best part' ; because it is the best of the grain ]
a powder that is made by crushing wheat or other grain and that is used for making bread, cakes etc
white/wholemeal/rice/wheat etc flour
⇨ ↑ plain flour , ↑ self-raising flour
II. flour 2 BrE AmE verb [transitive]
to cover a surface with flour when you are cooking:
Roll the pastry out on a lightly floured board.