What do you call someone who speaks three languages?
Trilingual
What do you call someone who speaks two languages?
Bilingual
What do you call someone who speaks one language?
American
I took four years of German in high school, can still sort of read it and understand the general gist of someone speaking it, but could not longer carry on a conversation.
Briefly studied Chinese in college (mostly gone now) and have taught myself a smattering of Spanish.
I almost always dream in English but a while back dreamt I was speaking Vietnamese, a language I know only a few words off.