This is the 8434th most frequent Polish word.
pogonią
"Chase" or "pursuit."
The word 'pogonią' is used in the instrumental case to describe the act of chasing.
Dzieci bawiły się na podwórku, a potem pogonią za piłką.
The children were playing in the yard and then chased after the ball.
Here, 'pogonią' indicates a pursuit or chase, used instrumentally in the sentence.
Żołnierze ruszyli w pogonią za przeciwnikiem.
The soldiers set off in pursuit of the enemy.
In this context, 'pogonią' metaphorically refers to striving for or pursuing material values, again using the instrumental case.