March Madness bracket

Reader's　Digest 3月号の記事 "LAUGHTER THE BEST Medicine" からの引用です。

About 10 percent of Americans fill out a March Madness bracket for a pool at the office or with friends.

まず "March Madness" が分からないので辞書を見ます。

・Oxford English Dictionary: Everyone talks about March Madness in college basketball.

なるほど、けれどまだその後に続く "bracket" のここでの意味が分からないので英英辞書を見ます。

・Oxford English Dictionary: diagram representing the sequence of games in a sports tournament, especially as used for making predictions about its outcome.: with the March Madness tournament half the fun is filling out your bracket

・Cambridge English Dictionary: a diagram (= drawing) showing a series of games played in a tournament (= sports competition): In some tournaments, the full bracket is determined before the first game

そう言えば昔、甲子園大会が始まると職場でどこの高校が優勝するかの賭けをする回覧が回っていた事を思い出しましたが、似ていますね。