dirk

As a proper noun dirk

is of german and dutch origin, cognate to derek.

As a verb irk is

to irritate; annoy; bother.

As an adjective dark

is having an absolute or (more often) relative lack of light.

As a noun dark

is a complete or (more often) partial absence of light.

As a proper noun dirk is

of german and dutch origin, cognate to derek.

As nouns the difference between dirk and poniard

is that dirk is a long Scottish dagger with a straight blade while poniard is a dagger typically having a slender square or triangular blade.

As verbs the difference between dirk and poniard

is that dirk is to stab with a dirk while poniard is to stab with a poniard.

As a proper noun Dirk

is a given name derived from Germanic of German and Dutch origin, cognate to Derek.