Wiktionary
n. A conceptual barrier to effective communication, that occurs when people who speak different languages attempt to communicate with each other.
WordNet
n. barrier to communication resulting from speaking different languages
Wikipedia
Language barrier is a figurative phrase used primarily to indicate the difficulties faced when people who have no language in common attempt to communicate with each other. It may also be used in other contexts.
Usage examples of "language barrier".
It was while the master plumber was supervising that job of construction that he met Ioan and, despite the considerable language barrier, by the time the donnickers were finished he and she were regularly going out on the town together.
Well, ignoring the immediate bug/Federate language barrier, if we could get an answer to that, we wouldn't be fighting this war.
It's superbly visual, explaining so much in spite of the language barrier-though it also slowly teaches their language.
One that could overcome the language barrier would be to transmit signals that when correctly decoded produce an actual picture outline or information symbol.
As soon as he had identified himself to Thomas, Caron had to take the receiver back because of the language barrier.
A coarse, cold voice cut her off, that of an ex-Russian soldier, which Jake understood because it was deadspeak: mental communication which, like telepathy, knew no language barrier.
That last comment got through the language barrier, but it sounded too much like what the stable boss said when he was going to behead a horse.