Brown-Driver-Briggs (BDB)
H3426
H3426 יֵשׁ subst . being , substance , existence . substance . elsewhere (prop. as a subst. in in the st. c.), it asserts existence , and so corresponds to the verb substantive , is ( are , was , were , will be ), lit. the being , presence of …
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain