Sounds made by hooters about one (6)
I believe the answer is:
noises
'sounds' is the definition.
(I know this)
'hooters about one' is the wordplay.
'hooters' becomes 'noses' (I've seen this before).
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'noses' placed around 'i' is 'NOISES'.
'made by' acts as a link.
(Other definitions for noises that I've seen before include "sounds unpleasant" , "Sounds, rackets" , "- - Off (stage farce)" , "Unmusical sounds?" , "Disturbing sounds" .)