In grammar, the word singular means "the form of a word representing or associated with one person, place, or thing."
The term is normally used in contrast to plural.
A singular noun or pronoun represents one person, place, or thing.
Examples: dog, child, I, he
The singular form of a verb goes with a singular subject.
Example: He is coming here very soon.
(The verb is said to be "in the third person singular.")