とうしょ 投書 Common word JLPT N2 LinksSentence search for 投書Sentence search for とうしょKanji details for 投 and 書Edit in JMdict Noun, Suru verb1. letter (e.g. of complaint); letter to the editor; letter from a reader2. contribution (to a newspaper, magazine, etc.)See also 投稿 Discussions Log in to talk about this word.