American acquisition of 2001
I believe the answer is:
twa
'american acquisition of 2001' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for twa that I've seen before include "couple at Prestwick" , "pygmies" , "Organisation that used to provide flight" , "pygmy" , "A couple of Scotsmen" .)