arrow, (burning) coal, burning heat, + spark, hot thunderbolt

Boyd’s Bible Dictionary:

[ARMS.]

Concise Bible Dictionary:

With the bow, a common weapon of the ancients. We know not of what wood the arrows of the Israelites were made. Apparently the arrows were sometimes poisoned (Job 6:4; Psa. 120:4; Num. 24:8; Deut. 32:23). Arrows are used metaphorically for the judgments of God (Psa. 38:2; Psa. 45:5); also for anything sharp and painful, as smiting by the tongue (Jer. 9:8).

Strong’s Dictionary of Hebrew Words:

Transliteration:
resheph
Phonic:
reh’-shef
Meaning:
from 8313; a live coal; by analogy lightning; figuratively, an arrow, (as flashing through the air); specifically, fever
KJV Usage:
arrow, (burning) coal, burning heat, + spark, hot thunderbolt