Press pipe down underneath vineyard (5)
I believe the answer is:
crush
'press' is the definition.
(I know that press can be written as crush)
'pipe down underneath vineyard' is the wordplay.
'pipe down' becomes 'sh' (both can mean 'be quiet').
'underneath' says to put letters next to each other (in a down clue, some letters go under others).
'vineyard' becomes 'cru' (e.g. grand cru - vineyard or group of vineyards).
'sh' put after 'cru' is 'CRUSH'.
(Other definitions for crush that I've seen before include "An infatuation with the orange drink?" , "Passion - fruit drink?" , "stampede" , "Close crowd of people" , "Intense infatuation; pressing crowd" .)