Bible Lexicons

פֶּלֶג m.

(1)  a stream, a river. Arab. فَلْجُ, فَلَجُ a stream, a small river, Eth. ፊለግ፡ a river, a large stream. It is said properly to signify a channel, watercourse, so called from the idea of dividing, comp. the verb, Job 38:25. I suspect, however, the root פלג also to have had the meaning of flowing, fluctuating, bubbling up; compare flu-o, fluc-si, fluctus, φλύ-ω, also πέλαγος, Eth. ፊልሐ፡ to bubble, to bubble up; from the biliteral stock פל, compare פּוֹל, also bullire, wallen, Welle. Psalms 65:10, פֶּלֶג אֱלֹהִים “the river (or collect. the rivers) of God,” i.e. watering the city [Thes. “the land”] with the blessing of God. Plur. פְּלָגִים Isaiah 30:25 constr. פַּלְגֵי like פַּלְגֵי מַיִם Psalms 1:3; Proverbs 5:16, 21:1 used of streams of tears, Lamentations 3:48 (compare فَلَجُ a stream of tears).

(2) [Peleg], pr.n. of a patriarch (“division, part”), the son of Heber, Genesis 10:25; 1 Chronicles 1:19.