UNNI

un'-i (`unni, meaning unknown): (1) One of "the twelve brethren" (so Curtis for the Revised Version (British and American) "brethren of the second degree") appointed as singers (1 Chronicles 15:18,20).

(2) In Nehemiah 12:9 (Kethibh `unno) = the Revised Version (British and American) UNNO (which see).

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.