What does 話中 mean?
話中 is a Japanese noun meaning “while talking, the line is busy” in English. It is written as 話中 in kanji, はなしちゅう in hiragana, and hanashichuu in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
トムはメアリーと電話中です。
Tom is talking to Mary on the phone.