This is the 10530th most frequent German word.
rechtsanwalts
"Rechtsanwalts" is the genitive form of "Rechtsanwalt," meaning "lawyer" or "attorney" in English.
In this sentence, 'Rechtsanwalts' is used to refer to a singular lawyer, and it seems like a mistaken usage of the word 'Rechtsanwalt' in the singular possessive case, which might be more accurately written in correct singular nominative as 'einen Rechtsanwalt'.
Ich besuchte letzte Woche einen Rechtsanwalts, um eine rechtliche Frage zu klären.
I visited a lawyer last week to clarify a legal matter.
In this sentence, 'Rechtsanwalts' is correctly used in the possessive case to indicate ownership of the office.
Das Büro meines Rechtsanwalts ist direkt in der Innenstadt.
The office of my lawyer is directly in the city center.
Here, 'Rechtsanwalts' is also in the possessive form, showing an attribute of belonging to the lawyer.