expression, ichidan verb
take advantage of one's authority; abuse one's position; throw one's weight around
Idiomatic expression meaning to use one's status, power, or connections as a shield to act arrogantly or unfairly. Often used in the pattern ～を笠に着る.
彼は上司の権威を笠に着て、部下に無理な要求をした。
He took advantage of his boss's authority and made unreasonable demands on his subordinates.
親の名声を笠に着るようなことはするな。
Don't do things like abusing your parents' reputation.