| Dirk 1. (n.) A kind of dagger or poniard; -- formerly much used by the Scottish Highlander. 2. (v. t.) To stab with a dirk. 3. (a.) Dark. 4. (v. t.) To darken. Thesaurus Entries dagger, dirk, dudgeon, impale, knife, lance, pierce, plunge in, poniard, run through, saber, spear, spike, spit, stab, stick, stiletto, sword, transfix, transpierce |