(1)索引；目录

(2)指数
用于跟踪测量经济变动状况或者股票市场波动的统计数据，这些指数的制定通常是以某一年某一月为基期以便比较。

(3)指标；率
在抵押贷款中，用于确定在贴现期〔discount period〕结束之后，可据以调整抵押利率的指标，例如通胀率；一年期国债利率或同业存放平均利率等。

• twelvemonth
• twelve-month bond
• twelve-month liquidation
• Twelve Tables
• Twentieth Amendment
• Twenty-eight Hour Law
• Twenty-fifth Amendment
• Twenty-first Amendment
• Twenty-fourth Amendment
• Twenty-second Amendment
• Twenty-seventh Amendment
• Twenty-sixth Amendment
• Twenty-third Amendment
• twice in jeopardy
• twin wills
• twisting
• two-courts rule
• two-dismissal rule
• two-donee statute
• two-for-one rule
• two-innocent-persons principle
• two-issue rule
• two-level appellate system
• two-step appeal
• two witness rule