いっつう

一通

表記・読み：いっつう

1. 1

   one copy (of a document); one letter

   名詞
2. 2

   one-way traffic

   名詞abbreviation
3. 3

   pure straight; winning hand containing nine consecutive tiles of the same suit (i.e. 1-9)

   名詞sometimes written イッツーabbreviationmahjong