(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。

• significavit
• signify
• signing judgment
• sign mannual
• signum
• Si in chartis membranisve tuis carmen vel historiam vel orationem Titius scripserit, hujus corporis non Titius sed tu dominus esse videris.
• Si ingratum dixeris, omnia dixeris.
• si ita est
• Si judicas, cognosce.
• silence
• silence of accused
• silence of Congress
• silentiarius
• Silent leges inter arma.
• silent partner
• silent system
• silent witness theory
• silk
• silk gown
• silva caedua
• silver bond
• silver certificates
• silver coinage
• silver platter doctrine
• sim