Sift - (Webster's 1828 Dictionary)
1. To separate by a sieve, as the fine part of a substance from the coarse; as, to sift meal; to sift powder; to sift sand or lime.
2. To separate; to part.
3. To examine minutely or critically; to scrutinize. Let the principles of the party be thoroughly sifted. We have sifted your objections.