Definition of n-word:
(n) :
(euphemistic) The word nigger or nigga or nigra.
(n) :
(euphemistic, by generalization) Any word, regardless of its starting letter, that is used oppressively, marginalizes or oppresses a group of people.
(n) :
(euphemistic) The word Nazi.
(n) :
(politics) The word nuclear.
(n) :
(linguistics) A negation word, such as not, nobody, or nothing.
(n) :
(linguistics) A Danish/Swedish/Norwegian noun of the common gender (their indefinite article being en), as opposed to t-words, nouns of the neuter gender (their indefinite article being et).