This is the 4484th most frequent Turkish word.
at
Horse.
Here, the word 'at' is used as a noun meaning 'horse'.
At bahçede koşuyor.
The horse is running in the garden.
In this sentence, 'at' is used as a command form of the verb 'atmak,' meaning 'to throw'.
Topu bana at!
Throw the ball to me!
Here, 'atı' is the accusative form of 'at,' showing that the 'horse' is the direct object.