Freedom Rock (Lyon County), George, Iowa - Picture of George, Iowa. George Photo: Freedom Rock (Lyon County), George, Iowa.
tongue twister - an expression that is difficult to articulate clearly; `rubber baby buggy bumper' is a tongue twister. locution, saying, expression - a word or phrase that particular people use in particular situations; pardon the expression. Translations.
The tongue-rolling version is dominant over the one that doesn't let you roll your tongue. This is what dominant means -- one of the versions trumps the other.. Well, it's not quite that simple. There are many examples of parents who can't roll their tongues having tongue-rolling children. And the little bit of hard research that has been done on the topic clearly shows that tongue rolling is not a simple dominant trait.