This is the 528th most frequent Lithuanian word.
stalo
"Stalo" means "of the table" (genitive form of "stalas").
The word 'stalo' in this sentence is the genitive form of 'stalas' (table), indicating possession or relation.
Ant stalo guli knyga.
A book is lying on the table.
Here, 'stalo' is also in the genitive case, showing where the object is being taken from (indicating location).
Prašau paimti stiklinę nuo stalo.
Please take the glass off the table.
In this sentence, 'stalo' is used in the genitive case to describe the preposition 'prie' (near, to), specifying location related to the table.