Guy - crack (4)
I believe the answer is:
chap
I believe this is a double definition.
'guy' is the first definition.
(both can mean a man)
'crack' is the second definition.
(I know that chap is a type of crack)
(Other definitions for chap that I've seen before include "(Of skin) become sore" , "Man; (of skin) turn sore" , "Become sore; fellow" , "Man, sore patch" , "we prefer not to have on hand" .)