grand son به انگلیسی
From Longman Dictionary
grand‧son /ˈɡrænsʌn/ ●●● S3 W3 noun
the son of your son or daughter
پسر پسر یا دختر شما
Example
But suppose the paternal grandfather were dead when the eldest grandson was born
But it was as if her grandson had saved her life with his gift
Television is different from the toy that Freud’s grandson threw out of the pram
Sigistrix was, after all, the grandson of Theodoric
If he proceeds from the Son, why do you not say he is the grandson of the Father