probably the great aurochs or wild bulls which are now extinct. The exact meaning is not known.
STRONG'S WORD STUDY
H7214 — רְאֵם
re.em · wild ox · Hebrew/Aramaic
9 tagged verse occurrences
Numbers 23:22 · רְאֵ֖םGod brought them out of Egypt; he hath as it were the strength of an unicorn.Numbers 24:8 · רְאֵ֖םGod brought him forth out of Egypt; he hath as it were the strength of an unicorn: he shall eat up the nations his enemies, and shall break their bones, and pierce [them] through with his arrows.Deuteronomy 33:17 · רְאֵם֙His glory [is like] the firstling of his bullock, and his horns [are like] the horns of unicorns: with them he shall push the people together to the ends of the earth: and they [are] the ten thousands of Ephraim, and they [are] the thousands of Manasseh.Job 39:9 · רֵּ֣יםWill the unicorn be willing to serve thee, or abide by thy crib?Job 39:10 · רֵ֭יםCanst thou bind the unicorn with his band in the furrow? or will he harrow the valleys after thee?Psalm 22:21 · רֵמִ֣יםSave me from the lion’s mouth: for thou hast heard me from the horns of the unicorns.Psalm 29:6 · רְאֵמִֽים׃He maketh them also to skip like a calf; Lebanon and Sirion like a young unicorn.Psalm 92:10 · כִּרְאֵ֣יםBut my horn shalt thou exalt like [the horn of] an unicorn: I shall be anointed with fresh oil.Isaiah 34:7 · רְאֵמִים֙And the unicorns shall come down with them, and the bullocks with the bulls; and their land shall be soaked with blood, and their dust made fat with fatness.