expression, suru verb (irregular)
be proud; feel proud; have one's nose in the air
Idiomatic expression meaning to feel proud or to show pride, often in a slightly boastful way. Literally 'to make one's nose high'.
息子が大学に合格して、彼は鼻を高くしている。
His son passed the university entrance exam, and he is feeling proud.
She talked about her success with pride.