- To separate with a sieve, as the fine part of a substance
from the coarse; as, to sift meal or flour; to sift powder; to sift
sand or lime. - To separate or part as if with a sieve. - To examine critically or minutely; to scrutinize.
Meaning of 'sift' (Princeton's WordNet)
1 . sift
[ v]
Meaning (1): - separate by passing through a sieve or other straining device to separate out coarser elements