横レス

よこレスyokoresu

noun

  1. butting in (to a discussion on a message board, mailing list, etc.)
  2. reply from someone who has butted in

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences