vanity /ˈvænəti/ noun
plural vanities
plural vanities
Learner's definition of VANITY
[noncount] : the quality of people who have too much pride in their own appearance, abilities, achievements, etc. : the quality of being vain
[count] : something (such as a belief or a way of behaving) which shows that you have too much pride in yourself, your social status, etc. usually plural
[count] US
: a bathroom cabinet that is covered by a sink and a countertop
[noncount] formal + literary : the quality of being worthless or unimportant when compared to very serious things