5 occurrences in 5 dictionaries
Reference: Nun
Easton
Beyond the fact that he was the father of Joshua nothing more is known of him (Ex 33:11).
Fausets
Sprung from Ephraim; father of Joshua (1Ch 7:20-27).
Hastings
The fourteenth letter of the Hebrew alphabet, and as such employed in the 119th Psalm to designate the 14th part, each verse of which begins with this letter.
NUN.