形容词
1. 单数的;单数形式的
The singular form of a word is the form that is used when referring to one person or thing.
2. (名词的)单数，单数形式
The singular of a noun is the form of it that is used to refer to one person or thing.
3. 非凡的;突出的;显著的
Singular means very great and remarkable.