2. Noun. (humorous) Any word beginning with ''n'' that is not normally taboo but is considered (often humorously) to be so in the given context. ¹
3. Noun. (linguistics) Negation words, such as ''not'', ''nobody'', and ''nothing''. ¹
4. Noun. (linguistics) Danish nouns of the common gender (their indefinite article being (term en#Danish en)), as opposed to ''t-words'', nouns of the neuter gender (their indefinite article being (term et#Danish et)). ¹
¹ Source: wiktionary.com