n an agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States
n a unit of length equal to one twelfth of a foot
n a rare soft silvery metallic element; occurs in small quantities in sphalerite
n a state in midwestern United States
abbr. 惯性导航系统（Inertial Navigation System）；国际新闻社（International News Service）；信息网络系统（Information Network System）