Lambdacism
Lambdacism , noun
[Latin lambdacismus, Greek {not transcribed}, from la`mbda the letter lambda (L).]
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.