a firm hand

a firm hand

strict discipline or control.
Often used in the the fuller form, a firm hand on the reins (or the tiller ), this phrase is employing the image of controlling a horse by using the reins (or a boat using the tiller).
See also: firm, hand

a firm ˈhand

strong discipline and control: What his son needs, if you ask me, is a firm hand!
See also: firm, hand