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 retain in one's possession or power
: to refrain from granting, giving, or allowing
: to have in control
: the means or provisions by which one is kept
: one that keeps or protects: such as
: fortress, castle
Seen and Heard
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