'Covering' in the Bible

He said, “Who are you?” And she answered, “I am Ruth your maid. So spread your covering over your maid, for you are a close relative.”

And he saith, 'Give the covering which is on thee, and keep hold on it;' and she keepeth hold on it, and he measureth six measures of barley, and layeth it on her; and he goeth into the city.