Definition of "dirk" in English

noun

1. A long Scottish dagger with a straight blade.

2. (nautical) A ceremonial dagger worn by naval or air force officers in some nations' militaries; formerly, a fighting dagger used by sailors as a boarding weapon.

verb

1. To stab with a dirk.

verb

1. (obsolete) To darken.

noun

1. (Midwestern US, dated, slang) A penis.

   • The word dick itself serves as model for two variants which are probably Midwestern, dirk and dork, also meaning "penis"...

2. (Midwestern US, dated, slang) A socially unacceptable person; an oddball.

   • Near-synonym: dork
   • ...on at least one Midwestern campus a dirk may be an "oddball" student, while a prick (more common) is of course an offensive one.