米大統領選挙が迫る中でのオバマ元大統領のツイート。

 

 13 days until the most important election of our lifetimes. And you don’t have to wait until November 3rd to cast your ballot. Make a plan, vote, and then help your friends and family make a plan at http://iwillvote.com. Let’s do this.

 

 cast your ballotのballotは投票用紙、もしくは投票、castは投げる、投じる。cast a ballotで、「投票する」.。

 

 ballotの語源を調べてみると…

 

1540s, "small ball used in voting," also "secret vote taken by ballots," from Italian pallotte, diminutive of palla "ball," for small balls used as counters in secret voting, from a Germanic source, from PIE root *bhel- (2) "to blow, swell." Earliest references are to Venice. By 1776 extended to tickets or sheets of paper used in secret voting. Ballot box attested from 1670s; metonymically from 1834 as "system or practice of voting by ballot."

 

 無記名の投票する際にもちいられた小さなボールが語源で、もともとはイタリア語からきているとのこと。

 

cast a ballot を各種辞書で検索
英和辞典 Weblio
英和辞典 英辞郎 on the WEB
英英辞典 Cambridge English Dictionary
語源辞典 Online Etymology Dictionary
俗語辞典 Urban Dictionary
シソーラス Thesaurus.com
検索 Google