2.figuratively (always sing.) of flashing arrow-head
Strong's H1300בָּרָק: lightning; by analogy, a gleam; concretely, a flashing sword KJV:bright, glitter(-ing sword), lightning.
Meanings: Brown-Driver-Briggs (1906) and Strong's Hebrew Dictionary (1890), public domain, via the Open Scriptures Hebrew Bible Project (CC BY 4.0). TWOT numbers for reference only.
Root family 287: בָּרַקbāraq — flash; to lighten, lightning, gleam, flashing sword; cast forth, bright, glitter