From: Micha Berger <> The Maharsha defines "aral sefasayim" more literally, as a lip injury. And thus Moshe Rabbeinu couldn't naturally say the letters buma"f (including vav). ... The Sharei Aharon brings this beshem the Abarbenel. >From Rabenu Chananel he quotes "Kevad Peh" = Z,Sh,R,S(amech)Tz and "Kevad Loshon" = DTesLNTav And from "Tav Vav Shin (?) " GYCK. SBA