DICT.TW Dictionary Taiwan

 lamb·da·cism /ˈlæmdəˌsɪzəm/ 名詞
 言語中r音發成l音,不能準確地發出l音

 Lamb·da·cism n.
 1. A fault in speaking or in composition, which consists in too frequent use of the letter l, or in doubling it erroneously.
 2. A defect in pronunciation of the letter l when doubled, which consists in giving it a sound as if followed by y, similar to that of the letters lli in billion.
 3. The use of the sound of l for that of r in pronunciation; lallation; as, Amelican for American.
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 lambdacism
      n : speech defect involving excessive use or unusual
          pronunciation of the phoneme `l'