呢喃 [－－]

Jyutping nei4 naam4
Pinyin ní nán

Definitions (CC-CEDICT)
  1. (onom.) twittering of birds
  2. whispering
  3. murmuring
Definitions (Wiktionary)
  1. verb
    to whisper; to murmur
  2. verb
    to make high-pitched chirping sounds, such as those of a swallow; to twitter