a frame or machine for weaving together yarns or threads into cloth [Middle English lome tool, loom, from Old English gelōma tool]
to come into sight indistinctly, often in enlarged or distorted and menacing form, often as a result of atmospheric conditionsto appear in an impressively great or exaggerated formto take shape as an impending occurrence Our exams loomed large [prob from Low German or Dutch]
the indistinct and exaggerated appearance of something seen on the horizon or through fog or darkness