A primitive root; properly, meaning to be white; used only as denominative from sheleg; to be snow-white (with the linen clothing of the slain) -- be as snow.
see HEBREW sheleg
H7949. shalag
[שָׁלַג] verb denominative Hiph`il snow; — Imperfect3feminine singular תַּשְׁלֵג (Ges§ 109k), impersonal Psalm 68:15 it snows on almon (meaning obscure).