High speed flier? (3)
I believe the answer is:
bat
This clue might be a double definition.
'high' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'speed flier?' is the second definition.
'bat' can be an answer for 'speed' (thesaurus). I am not sure about the 'flier?' bit.
Can you help me to learn more?
(Other definitions for bat that I've seen before include "Wooden implement for cricket" , "Small flying mammal - like 11 Across" , "Night-flyer" , "Flutter (eyelids)" , "Nocturnal flier" .)