D defs.my
Entry 2 senses Webster, 1913

Supervisor

/so͞op′ərvīz'ər/ · Su·per·vis·or · IPA /ˈsupɚˌvaɪzɚ/
01 n. One who supervises; an overseer; an inspector; a superintendent; as, a supervisor of schools.
  1. 1.
    One who supervises; an overseer; an inspector; a superintendent; as, a supervisor of schools.
  2. 2.
    A spectator; a looker-on.[Obs.]