ˈteˌstād.ə(r), -ātə-, ̷ ̷ˈ ̷ ̷ ̷ ̷ noun
( -s )
Etymology: Middle English testatour, from Anglo-French, from Late Latin testator, from Latin testatus (past participle of testari to be a witness, make a will) + -or — more at testament
1. : a person who leaves a will or testament in force at his death
2. obsolete : one that testifies : witness