Brown-Driver-Briggs (BDB)
H3824
H3824 לֵבָב inner man , mind , will , heart . seldom of things in the midst of the seas . usu. of men . the inner man in contrast with the outer . the inner man , indef. the soul , comprehending mind, affections and will . specific ref. to mind . spec. ref. to inclinations , resolutions , determinations of the will . spec. ref. to conscience . spec. ref. to moral character . = the man himself . spec. as seat of appetites . spec. of seat of the emotions and passions . seat of courage
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain