IPA: /lɪˈɡeɪtə/
KK: /lɪˈɡeɪtər/
A person who creates a will to distribute their property or assets after their death.
The legator specified in the will how the estate should be divided among the heirs.
Legator is formed from "legare" (meaning to appoint or bequeath) and the suffix "-or" (meaning one who). The word refers to one who bequeaths or appoints, particularly in a legal context.
Think of someone who 'appoints' ('legare') or 'bequeaths' something — that's what a legator does.