This is the 484th most frequent Estonian word.
esimeses
"Esimeses" means "in the first" in English.
The word 'esimeses' here signifies the locative form (inessive case) of 'esimene', meaning 'in the first'. It indicates that something (the white sofa) is located in the first room.
Esimeses toas oli valge diivan.
In the first room, there was a white sofa.
Here, 'esimeses' is in the inessive case of 'esimene', signifying inclusion in the first competition.
Ta osales esimeses võistluses ja saavutas esikoha.
He participated in the first competition and achieved first place.
The term 'esimeses' is used in the inessive case to describe that the book is situated in the first section of the bookshelf.