Strong's #5209: niyn (pronounced neen)
from 5125; progeny:--son.
Brown-Driver-Briggs Hebrew Lexicon:
nı̂yn
1) offspring, posterity
Part of Speech: noun masculine
Relation: from H5125
Usage:
This word is used 3 times:
Genesis 21:23: "unto me here by God that thou wilt not deal falsely with me, nor with my son, nor with my son's son: but according to the kindness that I have done"
Job 18:19: "He shall neither have son nor nephew among his people, nor any remaining in his dwellings."
Isaiah 14:22: "from Babylon the name, and remnant, and son, and nephew, saith the LORD."