Meanwhile in dictionaries --
Nachash:
"to practice divination, divine, observe signs, learn by experience, diligently observe, practice fortunetelling, take as an omen"; "copper, bronze"; "image (of serpent)"; "to whisper. Pi. - נִיחֵשׁ to divine, to make action dependent on an omen, to augur"
https://www.sefaria.org/Genesis.3.4?lang=bi&lookup=נָּחָ֖שׁ&with=Lexicon&lang2=en