D defs.my
Entry 2 senses Webster, 1913

Fad

/(făd)/ · IPA /fæd/
01 n. A hobby ; freak; whim.
  1. 1.
    A hobby ; freak; whim.
    “It is your favorite fad to draw plans.” G. Eliot.
  2. 2.
    a practise followed enthusiastically by a number of people for a limited period of time; as, the latest fad in fashion.
Syn. craze; mania.