\Dirk\, n. [Ir. duirc.]
A kind of dagger or poniard; -- formerly much used by the
Scottish Highlander.
{Dirk knife}, a clasp knife having a large, dirklike blade.

\Dirk\, v. t. [imp. & p. p. {Dirked}; p. pr. & vb. n.
{Dirking}.]
To stab with a dirk. --Sir W. Scott.

\Dirk\, a. [See {Dark}, a.]
Dark. [Obs.] --Chaucer.

\Dirk\, v. t.
To darken. [Obs.] --Spenser.