This is the 10363rd most frequent Turkish word.
binen
"One who boards or gets on."
In this sentence, "binen" is used as a participle describing the man who boarded the train.
Trene binen adam kitabını unutmuş.
The man who boarded the train forgot his book.
Here, "binen" serves as a participle referring to the student who entered the bus.
Otobüse binen öğrenci, şoföre selam verdi.
The student who got on the bus greeted the driver.
"Binen" works as a participle describing the child who was riding the bicycle.