This is the 860th most frequent Estonian word.
priit
The word "Priit" is a male given name in Estonia, not a noun with a definition.
Here 'Priit' is used as a proper noun to identify the name of a person.
Priit on väga tark õpilane.
Priit is a very smart student.
In this usage, 'priit' seems to be a repurposed adjective or noun implying 'free' or 'gratis' informally in Estonian.
See raamat ei ole priit, see on laenuks.
This book is not free; it is for lending.
Here, 'priit' is mentioned meta-linguistically to discuss its usage and occurrences.