This is the 13929th most frequent Turkish word.
masasından
"From his/her/its table" or "from the table."
Here, 'masasından' means 'from his table,' indicating a movement or action starting at the location of the table.
Ali kitabını masasından aldı.
Ali took his book from his table.
In this usage, 'masasından' indicates the origin from which something (the water) came, connected to the table.
Masasından dökülen su halıyı ıslattı.
The water spilled from the table made the carpet wet.
Here, 'masasından' is used to describe an action of retrieving items starting at the table belonging to the teacher.