KEEP A TIGHT REIN ON STH
keep a tight rein on sth: translation
Ⅰ.
keep a tight rein on sth
►to control something very carefully:»
We need to keep a tight rein on the advertising budget.
Main Entry:↑rein
Ⅱ.
keep a tight rein on sth
►to control something, especially spending, in a very careful way:»
The chancellor was urged to keep a tight rein on public finances.
Main Entry:↑tight