hebrew

In Psalm 22:21 is the Bible speaking of "unicorns"?

In Psalm 22:21 is the Bible speaking of "unicorns"?

I was reading Psalm 22 (from this question) and I found this verse:

Psalms 22:21 (KJV)
Save me from the lion’s mouth: for thou hast heard me from the horns of the unicorns.

When I switched translations I found “wild oxen” instead:

Translation of רַבָּֽה “rabbāh” in Psalm 62

Translation of רַבָּֽה “rabbāh” in Psalm 62

In Psalm 62, verses 2 and 6 differ in just one word, רַבָּֽה rabbāh, at the end of the verse. This is glossed as “great(ly)”, “much”, and the like.
Many translations render it as modifying the preceding verb: NASB “I will not be greatly sh…