Brown-Driver-Briggs (BDB)
H1253
H1253 בֹּר lye , potash , alkali used in smelting metals
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H1253 · Hebrew
bor
bore
the same as 1252; vegetable lye (from its cleansing); used as a soap for washing, or a flux for metals