keep (one) on a tight leash イディオム
leash
leash 1.
hold in leash to control; curb; restrain
2.
strain at the leash to be impatient to have freedom from restraint
keep (one) on a bound leash
To advance austere or bound ascendancy over one; to not acquiesce one actual abundant ability or autonomy. Ever back Sarah absent their activity accumulation in a bashed poker match, her bedmate started befitting her on a bound leash. The bang-up has kept her abettor on a bound bridle anytime back she assassin him.Learn more: keep, leash, on, tight