This is the 938th most frequent Latvian word.
pievērst
To turn, direct, or draw attention to.
Here, "pievērst" is used to mean "to pay attention to" or "to focus on."
Viņš pievērsa uzmanību detaļām.
He paid attention to the details.
In this instance, "pievērst" is a variation where it is used to mean "to close," though usually it is encountered in another verb form "pievērt."
Mēs pievērām durvis ciet stiprā vēja dēļ.
We closed the doors due to the strong wind.
Here again, it signifies "to pay attention to" or "to observe carefully."