D defs.my
Entry 2 senses Webster, 1913

Hereby

/hĭr-bī'/ · Here·by · IPA /hɪɹˈbaɪ/
01 adv. By means of this.
  1. 1.
    By means of this.
    “And hereby we do know that we know him.” — 1 John ii. 3.
  2. 2.
    Close by; very near.[Obs.]