Young cat — chap embraces it tons (6)
I believe the answer is:
kitten
'young cat' is the definition.
(a kitten is a young cat)
'chap embraces it tons' is the wordplay.
'chap' becomes 'ken' (man's name).
'embraces' indicates putting letters inside.
'tons' becomes 't'.
'it'+'t'='itt'
'ken' enclosing 'itt' is 'KITTEN'.
(Other definitions for kitten that I've seen before include "Baby cat" , "Little feline" , "Immature cat" , "New cat" , "Fluffy little animal" .)