Strong's Definition
a primitive root; to strain, (figuratively) extract, clarify
KJV Usage: fine, pour down, purge, purify, refine
STEPBible — Tyndale Abridged Hebrew Lexicon
זָקַק (za.qaq) — to refine. 1) to purify, distil, strain, refine 1a) (Qal) 1a1) to purify, distil, strain 1a2) to refine 1b) (Piel) to purge, refine 1c) (Pual) to refine, purify
UBS Dictionary of Biblical Hebrew
verb
Clean | verb qal, verb pi | ≈ טהר
to refine, to distil = process by which some element is purged of less pure elements
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[זָקַק] vb. refine, purify Qal Impf. 3 mpl.
Pi. fig., of purifying sons of Levi
Pu. refined
base