Definitions
1.NounA quirky, silly or stupid, socially inept person, or one who is out of touch with contemporary trends and typically has unfashionable hobbies. (Overlaps conceptually with nerd and geek, but does not imply the same level of intelligence.) .mw-parser-output .defdate{font-size:smaller}
2.NounThe penis.
3.VerbTo act or behave in the manner of a dork.
4.VerbTo act or behave in an awkward or clumsy manner.
5.NounAlternative form of dirk (“a long dagger”).