Strong's #431: anepsios (pronounced an-eps'-ee-os)
from 1 (as a particle of union) and an obsolete nepos (a brood); properly, akin, i.e. (specially) a cousin:--sister's son.
Thayer's Greek Lexicon:
̓́
anepsios
1) a cousin
Part of Speech: noun masculine
Relation: from G1 (as a particle of union) and an obsolete nepos (a brood)
Usage:
This word is used 1 times:
Colossians 4:10: "you, and Mark, sister's son to Barnabas, (touching whom ye received"