Strong's H386 · Hebrew

'eythan

ay-thawn'

or (shortened) ethan {ay-thawn'}; from an unused root (meaning to continue); permanence; hence (concrete) permanent; specifically a chieftain

Scholarly Lexicons

Brown-Driver-Briggs (BDB)

 H386 אֵיתָן , אֵתָן perennial , ever-flowing , fig. permanent , as subst, steady flow , permanence  

Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain