(1)最长辈者

(2)长子
关于长子继承权〔primogeniture〕的法律在美国并无效力，家庭中的长子女均不能以其为长的身份主张任何特权。

• double agency
• double allegiance
• double assessment
• double avail of marriage
• double bond
• double bunking
• double-check
• double comma
• double commission
• double complaint
• double contingency
• double conversion
• double costs
• double cousin
• double creditor
• double-cross
• double cutout
• double damages
• double-declining-balance depreciation
• double derivative suit
• double dipper
• double eagle
• double entry
• double entry bookkeeping
• double fine