Первая составная часть сложных слов, указывающая на отношение к вагонам, например: вагоноопрокидыватель, вагоноремонтный.
"Sweet mercy is nobility's true badge." William Shakespeare
"It is better to know some of the questions than all of the answers." James Thurber
"This is the most joyful day that ever I saw in my pilgrimage on earth." Donald Cargill
"Life is but thought." Sara Teasdale
