Helicopter (10)
'helicopter' is the definition.
(synonyms)
This is all the clue.
(Other definitions for whirlybird that I've seen before include "Helicopter (sl.)" , "Helicopter (informal)" , "Chopper" .)
'helicopter' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for chopper that I've seen before include "type of aircraft" , "Small axe" , "Air transport" , "Lizzie Borden" , "Motorbike" .)