Merriam-Webster Online Dictionary
loom (noun) a frame or machine for interlacing at right angles two or more sets of threads or yarns to form a cloth
intransitive verb
1.
to come into sight in enlarged or distorted and indistinct form often as a result of atmospheric conditions
2.
a) to appear in an impressively great or exaggerated form - deficits loomed large
b) to take shape as an impending occurrence
the indistinct and exaggerated appearance of something seen on the horizon or through fog or darkness , also a shadow or reflection - looming