The Most Common and Least Common Birthdays and Zodiac Signs. 1  What Definitive Sources Say. 2  The Rarest Birthdays: Holidays, April 1, and Any 13th. 3  Birthdays and the Seasons. 4  Most Common and Least Common Zodiac Signs.
verb. create, invent. 1  brainstorm. 2  compose. 3  conceive. 4  contrive. 5  counterfeit. 6  dream up. 7  fabricate. 8  forge. 9  formulate. 10  frame. 11  head trip. 12  make up. 13  make up off the top of one's head. 14  manufacture. 15  mint. 16  mold. 17  originate. 18  spark. 19  spitball. 20  stamp. 21  strike. 22  think up. 23  trump up.
A sudden idea, esp one that is apt and useful; a happy insight â¢Brainstorm was a medical term for ''mental explosion'' by the 1890s (1920s+) verb. To examine and work on a problem by having a group sit around and utter spontaneously whatever relevant thoughts they have: We'll brainstorm the drop in enrollment (1920s+)