grem ‧ lin /ˈɡremlən, ˈɡremlɪn/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: Perhaps from Irish Gaelic gruaimin 'angry little man' ; influenced by goblin ]
an imaginary evil spirit that is blamed for problems in machinery
grem ‧ lin /ˈɡremlən, ˈɡremlɪn/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: Perhaps from Irish Gaelic gruaimin 'angry little man' ; influenced by goblin ]
an imaginary evil spirit that is blamed for problems in machinery
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012