Not a standalone Chinese word — a phonetic suffix that surfaces in subtitle corpora as a chunk of place names ending in '-fornia'. The dominant case is
加利福尼亚 (California, 'Jiā-lì-fú-ní-yà'); the same suffix recurs in less common renderings of '-fornia'-ending names.
福 (fú) renders 'for',
尼 (ní) renders 'ni',
亚 (yà) renders the final 'a'.