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English definition of “loom”

loom

verb [I] uk   /luːm/ us  

loom verb [I] (APPEAR)

C2 to appear as a large, often frightening or unclear shape or object: Dark storm clouds loomed on the horizon.

loom verb [I] (CAUSE WORRY)

C2 If an unwanted or unpleasant event looms, it seems likely to happen soon and causes worry: Her exams are looming. Here, too, the threat of unemployment has been looming on the horizon. The threat of closure looms over the workforce.
Idioms

loom

noun [C] uk   /luːm/ us  
a piece of equipment for weaving (= making thread into cloth)
(Definition of loom from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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