The crossword solution for the term 'Pink Floyd Song on 'The Wall'' is 'Vera', a four-letter word. 'Vera' is the title of a song by the English progressive rock band Pink Floyd, which appears on their 1979 album The Wall. The song is about a woman named Vera Lynn, who was a popular singer during World War II. The lyrics of the song reflect the feelings of loneliness and alienation that many people experienced during the war.