He's ripped on the outside, one very trim (5)
I believe the answer is:
shave
'trim' is the definition.
(shaving is a kind of trimming)
'he's ripped on the outside one very' is the wordplay.
'ripped' indicates anagramming the letters.
'on the outside' indicates putting letters inside.
'one' becomes 'a' (**).
'very' becomes 'v' (abbreviation).
'hes' anagrammed gives 'she'.
'a'+'v'='av'
'she' going around 'av' is 'SHAVE'.
(Other definitions for shave that I've seen before include "Tonsure" , "Remove facial hair" , "Remove hair (which could be narrow)" , "Smooth surface" , "Remove unwanted hair" .)