Translation of Waschbrett

Yesterday, I heard a very good example to explain my point: On their journey more than ten years ago, the presidential couple Mr. and Mrs. Clinton visited Egypt. They were welcomed by the president.
Sunday is fine. Please let us talk tomorrow to arrange a schedule of that day. I will call you tomorrow, but in any case, here is my number again. We could do it also on Monday next week, if it fits everybody.
About multiple translations: We want students to memorize 'idioma' and 'lengua' as they are both very common. The best we could do is to place them in 2 different lessons, so that users learn them both.