a small piece of a valuable metal or mineral, especially gold, that is found in the earth 天然贵重金属块；（尤指）天然金块 a small round piece of some types of food （某些食品的）小圆块 chicken nuggets 鸡肉块
a small thing such as an idea or a fact that people think of as valuable 有价值的小东西；有用的想法（或事实） a useful nugget of information 一条有用的信息
Word Originmid 19th cent.: apparently from dialect nug ‘lump’, of unknown origin.