The son of your brother or sister is your nephew.
It is your nephew
If your sister-in-law is the wife of your brother, she is the mother of your brother's son. Her son-in-law would then be the brother-in-law of your brother's son. If your sister-in-law is your spouse's sister, her son-in-law is not related to you or to your brother's son.
Yes, for a nephew is sister's son, brother's son, wife's brother's son, wife's sister's son, husband's brother's son, husband's sister's son
The sister's son would be the nephew of her brother.
It is your sister's or brother's son, your adopted sister's or brother's son or your half sister's or brother's son. That would make you an aunt or uncle.
If two people are brother and sister and the sister has a son, then: her brother is her son's uncle, and her son is her brother's nephew.
If your brother-in-law is your wife's brother, his son is your nephew and you are his uncle or aunt. If your brother-in-law is sister's husband and his son is also her son, he is your nephew and you are his uncle or aunt. If the brother-in-law's son is from a marriage to a woman other than your sister, and your sister has not adopted him, he is not related to you. However, you may choose to treat him as your nephew, especially if he came into your life as a young child and considers your sister to be his mother.
You call him your nephew. (pronouced nes-few)
No. Your sister's husband is your brother-in-law, but his sister (and her son) are not related to you. However, that son is your sister's nephew.
If your sister-in-law is the sister of your spouse, her son is not related to your sister's son. If your sister-in-law is the wife of your brother, her son and your sister's son are first cousins.
Your son's wife is your daughter-in-law. Her brother is your son's brother-in-law, but the English language has no word for a relationship between you and him. You are not considered to be related to him.
Your sister's (or brother's) son is your nephew. You are his aunt or uncle.
Call him whatever his name is.If your uncle is the brother of one of your parents, then his wife's sister and her son are not related to you.If your uncle is the husband of one of your parents' sisters, then his wife's sister may be:your mother, in which case the son is you or your brother, oryour aunt (sister of both your parent and your uncle's wife), in which case the son is your first cousin.