Love is enough to hold back single suit (6)
I believe the answer is:
onesie
'single suit' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'love is enough to hold back' is the wordplay.
'to hold' indicates a hidden word (I've seen 'holding' mean this).
'back' says the letters should be written backwards.
'eiseno' is hidden within 'love is enough'.
'eiseno' written backwards gives 'ONESIE'.
Can you help me to learn more?
(Other definitions for onesie that I've seen before include "Single-piece full body garment" , "One-piece full-body garment" .)