Dirk

Part of speech: noun (n.)

A kind of dagger or poniard; -- formerly much used by the Scottish Highlander. Dirk knife, a clasp knife having a large, dirklike blade.

Part of speech: verb (v.)

To stab with a dirk. Sir W. Scott.

Part of speech: verb (v.)

To darken. [Obs.] Spenser.

Part of speech: adjective (a.)

Dark. [Obs.] Chaucer.