I heard announcements in the train (Hibiya Line):
この電車は六本木 ホーム (or ホーメ not sure) 中目黒行きです。
The English version of the above:
This train is bound for Nakameguro via Roppongi.
So, does ホーム (or ホーメ) mean "via" here?
And why is ホーム used here instead of using Japanese word to mean "via" or "through"?