This is the 10826th most frequent German word.
sbb
"SBB" in German typically refers to "Schweizerische Bundesbahnen," meaning "Swiss Federal Railways."
Here, "SBB" stands for the "Schweizerische Bundesbahnen," used as the subject and noun to represent the national railway company of Switzerland.
Die SBB ist die Eisenbahngesellschaft der Schweiz.
The SBB is the railway company of Switzerland.
In this sentence, "SBB" is used to denote the organization providing the service from which the ticket was purchased.
Ich habe mein Ticket online bei der SBB gekauft.
I bought my ticket online from the SBB.
Here, "SBB" modifies "train" to indicate that the train is operated by the Swiss Federal Railways.