Because it is not a tonal language, the meaning of words depends a lot on context - do without context it's impossible to answer your question accurately. In written language, the Chinese characters (kanji) help to understand meaning. So, to answer your question, 'fuku' could mean: 服 (fuku): clothing. 福 (fuku): luck; fortune. 吹く (fuku): to blow; for example, 尺八を吹く ('shakuhachi wo fuku') - literally, 'to blow a shakuhachi (Japanese flute), but more commonly, 'to play the flute') 拭く (fuku): to wipe (as in, wipe the table)