D defs.my
Entry 3 senses Webster, 1913

Lambdacism

· Lamb·da·cism · IPA /ˈlæmbdəˌsɪzəm/
01 n. A fault in speaking or in composition, which consists in too frequent use of the letter l, or in doubling it erroneously.
  1. 1.
    A fault in speaking or in composition, which consists in too frequent use of the letter l, or in doubling it erroneously.
  2. 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. 3.
    The use of the sound of l for that of r in pronunciation; lallation; as, Amelican for American.