- A short weapon used for stabbing. This is the general term: cf. Poniard, Stiletto, Bowie knife, Dirk, Misericorde, Anlace.
- A mark of reference in the form of a dagger [/]. It is the second in order when more than one reference occurs on a page; -- called also obelisk.
- A timber placed diagonally in a ship's frame.
- To pierce with a dagger; to stab.