Strong's Concordance
Original word: אוּל
Transliteration: uwl
Definition (short): mighty
Definition (full): the body, powerful
Strong's Exhaustive Concordance
From an unused root meaning to twist, i.e. (by implication) be strong; the body (as being rolled together); also powerful -- mighty, strength.
References
KJV:
And he carried away Jehoiachin to Babylon, and the king's mother, and the king's wives, and his officers, and the mighty of the land, those carried he into captivity from Jerusalem to Babylon.
NASB:
So he led Jehoiachin away into exile to Babylon; also the king's mother and the king's wives and his officials and the leading men of the land, he led away into exile from Jerusalem to Babylon.