This is the 2669th most frequent Polish word.
byliśmy
"We were."
The word 'byliśmy' here is a past tense verb describing that 'we' (1st person plural) were in a specific location.
Byliśmy na wycieczce w górach.
We were on a trip in the mountains.
The word 'byliśmy' is used to indicate a past state or condition of 'we' being tired.
Byliśmy bardzo zmęczeni po długiej wędrówce.
We were very tired after the long hike.
The word 'byliśmy' describes a past emotional state of 'we' being happy due to certain views.