/ˈtestəmənt/

tes·ta·meant

BrE /ˈtestəmənt/

NAmE /ˈtestəmənt/

(formal)

[C, usually singular, U]

~ (to sth)

a thing that shows that sth else exists or is true

SYN testimony

The new model is a testament to the skill and dedication of the workforce.

[C] = will (3)

This is the last will and testament of…

➡  see also New Testament, Old Testament