siftsift /sɪft/ verb [transitive] 
1
to put flour, sugar, etc. through a sifter in order to remove large pieces2also sift through to examine something very carefully in order to find something: 
The commission will have to sift through thousands of White House documents.
1 to put flour, sugar, etc. through a sifter in order to remove large pieces2also sift through to examine something very carefully in order to find something: The commission will have to sift through thousands of White House documents.
