D defs.my
Entry 2 senses Webster, 1913

Thereout

· There·out · IPA /ðɛəɹˈaʊt/
01 adv. Out of that or this.
  1. 1.
    Out of that or this.
    “He shall take thereout his handful of the flour.” — Lev. ii. 2.
  2. 2.
    On the outside; out of doors.[Obs.]