Lines contributing to hollow praise (3,2)

'praise' is the definition.
(thesaurus)

'lines contributing to hollow' is the wordplay.
I cannot quite understand how this works, but
'lines' could be 'ry' (abbreviation for railway) and 'ry' is located in the answer.
The remaining letters 'cup' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...