This is the 10143rd most frequent Turkish word.
başkandan
"From the president/chairperson."
In this sentence, 'başkandan' means 'from the president', referring to the origin of the letter.
Başkandan gelen mektubu okudum.
I read the letter that came from the president.
Here, 'başkandan' denotes 'to/from the president' dependent on the verb context, indicating the request is directed towards the president.
Başkandan bir ricam var.
I have a request for the president.
In this instance, 'başkandan' illustrates 'from the president', specifying the source of the gift.