This is the 4269th most frequent Polish word.
dwiema
The word "dwiema" is the instrumental case form of "dwie" (feminine or non-masculine personal for "two"), meaning "with two."
The word 'dwiema' is the instrumental form of the number 'two', used here to show the tool or method by which an action is performed, corresponding to the subject 'friends'.
Spotkałem się z dwiema przyjaciółkami.
I met with two friends.
Here 'dwiema' indicates the quantity and serves as the instrumental case of 'two', expressing the entities involved in the sharing.
Podzieliliśmy się dwiema książkami.
We shared two books.
In this sentence, 'dwiema' is used to indicate the number of people in the instrumental case, showing the entities he communicated with.