phrasal
1. : to point at with extended fingers and the thumb at one's nose as a gesture of derision, scorn, or defiance
2. : to treat or regard with disdain
thumb their noses at the collective wisdom of the ages — C.I.Glicksberg
phrasal
1. : to point at with extended fingers and the thumb at one's nose as a gesture of derision, scorn, or defiance
2. : to treat or regard with disdain
thumb their noses at the collective wisdom of the ages — C.I.Glicksberg
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012