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).