keep a rein on
Definition of keep a rein on
: to limit or control (something) We need to keep a rein on our spending. He keeps a tight rein on every part of the process.
Word by Word Definitions
: to take notice of by appropriate conduct : fulfill: such as
: to be faithful to
: to act fittingly in relation to
: custody, charge
: one that keeps or protects: such as
Seen and Heard
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