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Meaning of gremlin

grem•lin

Pronunciation: (grem'lin), [key]
— n.
  1. a mischievous invisible being, said by airplane pilots in World War II to cause engine trouble and mechanical difficulties.
  2. any cause of trouble, difficulties, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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