Lexical Definition

‎בְּהֵמוֹת‎ bᵉhêmôwth (be-hay-mohth') Behemoth ^H:N-M
in form a plural or ‎בְּהֵמָה‎, but really a singular of Egyptian derivation

Behemoth.

• a water-ox, i.e. the hippopotamus or Nile-horse

1) perhaps an extinct dinosaur
1a) a Diplodocus or Brachiosaurus, exact meaning unknown
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Some translate as elephant or hippopotamus but from the description in Job 40:15-24, this is patently absurd.

Extended Information

• Behemoth

Brown-Driver-Briggs

‎בְּהֵמוֺת‎ noun masculine behemoth, i.e. hippopotamus (apparently plural intensive of foregoing; according to Di Job 40:15 compare De Isa 30:6 from an (assumed) Egyptain p-ehemau, ox of the water) Job 40:15 (on identity, compare further Bo^{Hieroz. iii. 705}); probably also Ps 73:22 ‎בְּהֵמוֺת‎ ‎הָיִיתִי עִמָּ֑ךְ‎ a behemoth was I with (toward) thee (so Hi De; Che beasts); according to De Or also in ‎בַּהֲמוֺת‎ Isa 30:6 the burden of the behemoth of the south (supposed to be a designation of Egypt; but this unlikely, compare Che Di, read therefore) rather beasts of the south, namely of Judah.

Brown-Driver-Briggs References