Aeroplane makes bouncy noise, full of echo (6)
I believe the answer is:
boeing
'aeroplane' is the definition.
'bouncy noise full of echo' is the wordplay.
'bouncy noise' becomes 'boing'.
'full of' means one lot of letters goes inside another.
'echo' becomes 'e' (phonetic alphabet: alpha, bravo, charlie etc.).
'boing' going around 'e' is 'BOEING'.
'makes' acts as a link.
(Other definitions for boeing that I've seen before include "US aircraft company" , "Is the aircraft a big one?" , "American aircraft (company)" , "American aircraft manufacturer" .)