Read out letters for bloke (4)
I believe the answer is:
male
'for bloke' is the definition.
(bloke can mean a man)
'read out letters' is the wordplay.
'read out' indicates a 'sounds like' (homophone) clue.
'letters' becomes 'mail' (I've seen this before).
'mail' sounds like 'MALE'.
(Other definitions for male that I've seen before include "Lame sort of fellow" , "A gender" , "One cannot have babies" , "man?" , "Maldives capital; masculine" .)