expression, ichidan verb
lead someone around by the nose; have someone wrapped around one's finger
Idiomatic expression meaning to manipulate or control someone, especially a man by a woman, through charm or cunning. Often used in romantic or interpersonal contexts.
See also: 鼻毛を読む
彼女は彼の鼻毛を数えるのが上手だ。
She is good at leading him around by the nose.
That man is completely under his wife's thumb.