To set apart (one kind or type) from others
To put through a sieve
He remained throughout the night, crawling on his hands and knees to sift through the debris.
She tried to sift through her emotions before she returned to his door.
However, if we carefully sift their characters, the flamingos obviously reveal themselves as much nearer related to the Ciconiae, especially to Platalea and Ibis, than to the Anseres.
Three forms with glowing tattoos were moving slowly toward the road, stopping to sift through the dead bodies.
(1881-1882), which is the first account of the period written by one able to sift the statements of De Retz and the memoir writers, and rest upon such documents as Mazarin's letters and carnets.