Dagger

English - Dagger

knife, stiletto, dirk, poniard, short sword

Hebrew - דָּקַר -  Dagar

The weapon associated with ‎dagaris usually the sword, though a spear is the instrument in Num 25:8.

Dagger: Late 14th century, apparently from

Old French dague "dagger," from

Old Provence, dague, of uncertain origin.

Pokorny Etymon: dhelg-   'to stab, stick; needle'
Family/Language Indo-European Reflex(es) Gloss
Celtic
Old Irish: delg thorn, pin, brooch
English
Old English: dalc/dolc brooch, bracelet
W-Germanic
German: Dolch dagger
N-Germanic
Old Icelandic: dalkr pin, dagger
Italic
Latin: falx sickle, scythe
Baltic
Lithuanian: dal̃gis scythe
  dėlgė nettle
  dilgųs spiky, stinging

From TWOT:

OT449: To pierce, pierce through, thrust through, stab

From BDB:

Essentially the same definition as found in TWOT.