This is the 4549th most frequent Russian word.
генеральному
To the general (dative case of "генеральный").
The word "генеральному" is used in the dative case, modifying "директору" (director), indicating to whom the report is presented.
Он представил свой отчет генеральному директору.
He submitted his report to the CEO.
Here, "генеральному" describes "подрядчику" (contractor) in the dative case, indicating who was thanked.
Мы выразили благодарность генеральному подрядчику за успешное завершение проекта.
We expressed gratitude to the general contractor for the successful completion of the project.
In this sentence, "генеральному" qualifies "секретарю" (secretary) in the dative case, denoting the recipient of the signed document.