The term TV ATTACHMENT can be summarized by two crossword solutions: TIVO (4 letters) and VCR (3 letters). TIVO is a digital video recorder that allows users to record television programs and store them on an internal hard drive. VCR stands for Video Cassette Recorder, which was a popular device used to record television programs onto videotapes. Both of these devices are attachments to a television set and allow users to record and store television programs.