This is the 951st most frequent Lithuanian word.
gruodį
"Gruodį" means "in December."
The word 'gruodį' here is the accusative case of 'gruodis,' indicating a time period, 'in December.'
Aš atostogausiu gruodį.
I will take a vacation in December.
In this sentence, 'gruodį' again uses the accusative case to specify the time during which the described conditions occur.
Gruodį dažnai sninga ir būna šalta.
In December, it often snows and is cold.
Here, 'gruodį' highlights the timing of the birthday, using the accusative case form of 'gruodis'.