Antonio nearly hides vegetable (5)
I believe the answer is:
onion
'vegetable' is the definition.
(onion is a vegetable)
'antonio nearly hides' is the wordplay.
'hides' indicates a hidden word.
'ONION' is hidden in the letters of 'antonio nearly'.
(Other definitions for onion that I've seen before include "Strong tasting vegetable" , "Tear-jerking bulb" , "One may be set" , "The tear-inducing vegetable" , "Alliaceous plant" .)