twelfth

1. ORD The twelfth item in a series is the one that you count as number twelve. 第12

...the twelfth anniversary of the April revolution. …四月革命的12周年纪念日。

2. FRACTION A twelfth is one of twelve equal parts of something. 1/12

She is entitled to a twelfth of the cash. 她有权得到那笔现金的1/12。