This is the 1109th most frequent Russian word.
сын
Son.
The word 'сын' here is used in a possessive context to refer to one's male child.
Мой сын учится в школе.
My son is studying at school.
In this sentence, 'сын' denotes the male heir or offspring of a royal figure.
У царя был единственный сын.
The king had a single son.
Here, 'сын' refers to the desired male child in a hypothetical or ideal context.