Central spot to put up sexy picture (5)
I believe the answer is:
photo
'picture' is the definition.
(a photograph)
'central spot to put up sexy' is the wordplay.
'central' says to take the centre.
'spot' becomes 'dot' (I've seen this before).
'to' means one lot of letters go next to another (I've seen this in other clues).
'put up' becomes 'p' (I can't explain this - if you can you should give a lot more credence to this answer).
'sexy' becomes 'hot' (similar in meaning).
The centre of 'dot' is 'o'.
'p'+'hot'='phot'
'o' after 'phot' is 'PHOTO'.
Can you help me to learn more?
(Other definitions for photo that I've seen before include "Camera image" , "Snap, exposure, in short" , "Camera picture" , "Picture (abbr)" , "Snap, pic" .)