Lambdacism

A fault in speaking or in composition, which consists in too frequent use of the letter l, or in doubling it erroneously.

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.

The use of the sound of l for that of r in pronunciation; lallation; as, Amelican for American.

speech defect involving excessive use or unusual pronunciation of the phoneme /l/