Coffee tables press on trousers (8)
I believe the answer is:
espresso
'coffee' is the definition.
(espresso is a kind of coffee)
'tables press on trousers' is the wordplay.
'trousers' indicates a hidden word (to trouser can mean to contain or hold).
'ESPRESSO' is hidden within 'tables press on'.
(Other definitions for espresso that I've seen before include "Coffee made by forcing steam through grounds" , "strong drink" , "Kind of coffee made with steam" , "Seep Ross into the coffee" , "Coffee (S, not X)" .)