"Is "caboose" an official term, or is another
name more "official"? I don't care."
Well, rest assured...even if
you don't care...that the term "caboose" is an official, acceptable,
railroad term. My "official" UP Frt Conductor Book has the heading,
"Caboose" clearly spelled out on the page where a train's consist is
shown. Therefore, "Caboose" is an official term for the STMFC.