A launch of a rocket or missile, or a firing of a gun, in order to investigate its performance, handling characteristics etc.

A measured amount (volume) of a sample being used in a test.

Applied to premium gasoline. / (humorous, by extension) Of coffee: not decaffeinated. / Of a high standard.

To fly an aircraft in order to evaluate its performance

To drive a motor vehicle in order to evaluate it, especially before potential purchase. / (by extension) To try out a product before committing to purchasing it.

(idiomatic) Alternative form of testbed

plural of litmus test

Tested and proved to be reliable over a period of time.

plural of drug test

Third-person singular simple present indicative form of drug test