Briefly suppress love and save some pressure (7)

'some pressure' is the definition.
(unit of pressure)

'briefly suppress love and save' is the wordplay.
'briefly' means to remove the last letter.
'suppress' becomes 'kill' (eg suppressing or killing a newspaper story).
'love' becomes 'o' (love means zero in tennis).
'and' is a charade indicator (letters next to each other).
'save' becomes 'bar' (I've seen this before).
'kill' with its final letter taken away is 'kil'.
'kil'+'o'+'bar'='KILOBAR'