Supporter of lines partly gutted - no line put back (5)
I believe the answer is:
pylon
'supporter of lines' is the definition.
'pylon' can be an answer for 'supporter' (I have seen 'A supporter' mean 'pylon' so perhaps 'supporter' could also mean 'pylon'). I am not certain of the 'of lines' bit.
'partly gutted no line put back' is the wordplay.
'gutted' suggests removing the centre (to gut something is to remove its insides).
'line' becomes 'l' (used when specifying particular lines from a poem).
'put back' is a reversal indicator.
'partly' with its middle removed is 'py'.
'no'+'l'='nol'
'nol' in reverse letter order is 'lon'.
'py'+'lon'='PYLON'
Can you help me to learn more?
(Other definitions for pylon that I've seen before include "it may mark a turning point" , "Bearer of cable" , "current supporter" , "power supplier?" , "Steel tower carrying power lines" .)