nephew, son's son

Boyd’s Bible Dictionary:

(grandson). Grandchild or descendant (Job 18:19; Isa. 14:22).

Concise Bible Dictionary:

1. bene banim, “grandchildren” (Judg. 12:14).
2. neked, “offspring, progeny” (Job 18:19; Isa. 14:22).
3. ἔκγουα, “offspring, descendant” (1 Tim. 5:4).

Strong’s Dictionary of Hebrew Words:

Number:
5220 (find all occurrences in KJV Bible)
Transliteration:
neked
Phonic:
neh’-ked
Meaning:
from an unused root meaning to propagate; offspring
KJV Usage:
nephew, son's son