BDB4946
[נֵ֫בֶךְ] noun [masculine] spring (si vera lectio) (√ unknown); — only plural construct נִבְכֵייָֿם Job 38:16 the springs, sources of the ocean (|| חֵ֫קֶר תְּהוֺם); — Ol Siegf נִבְלֵי; Bu suggests נבעי = מֵבֻּעֵי as possibly; but Gr Perles read נִבְכֵי Job 28:11, also, for Masora מִבְּכִי, compare נָהָר 2.