dagger

The word 'dagger' entered English in the late 14th century, its precise lineage shrouded in some mystery. It is most plausibly derived from the Old French 'dague', which itself may have come from a Vulgar Latin term 'daca' meaning 'Dacian knife', linking the weapon to the ancient Dacian people of Eastern Europe. Another theory suggests a connection to a Middle English verb 'daggen', meaning to pierce or stab. Over time, the term solidified to refer specifically to a short, double-edged stabbing weapon, distinct from a knife, and later extended metaphorically to the typographical symbol resembling the weapon.

The word 'dagger' is a simplex word. Its origin is uncertain but likely from Middle English 'dag' or 'dagge', possibly related to Old French 'dague' or Vulgar Latin 'daca' (Dacian knife). It functions as a single, unanalyzable morpheme in modern English.