What is the meaning of נ?
Nun: the fourteenth letter of the Hebrew alphabet, after מ and before ס.
The numeral 50 in Hebrew numbering.
(נְקֵבָה, n'kevá) f.: feminine gender.
(נִכְשָׁל, nikh'shal): failed (in a test or examination)
(נֶגֶד, néged) vs.: versus, against
Source: wiktionary.org