This is the 558th most frequent Finnish word.
meillä
"Meillä" means "at our place" or "we have" depending on context.
In this sentence, 'meillä' translates to 'we have' where 'meillä' (us in adessive case) coupled with 'on' indicates possession.
Meillä on koira.
We have a dog.
Here, 'meillä' is used to indicate possession within a past negation.
Meillä ei ollut aikaa tehtävään.
We didn't have time for the task.
In this case, 'meillä' translates to 'here with us' referring to Finland as the context.