s, e, f, l, t, y are letters that make 'test fly'
te, fly, test, FL, Es, Te, EST are words within 'test fly'
1 possible definitions for 'test fly'
Under this definition, test fly is a verb and has the following properties:
'test fly' can be a type of fly, aviate, pilot.
'test fly' can be a category of air travel, aviation, air.