single
//ˈsɪŋɡəl//
Adjective
Only one; not double or multiple
A single flower grew in the garden.
Not married or in a romantic relationship
She is single and not looking for a relationship right now.
Designed for or used by one person
I booked a single room at the hotel.
Considered individually; separate
Every single student must submit their own work.
Noun
A person who is not married or in a romantic relationship
Many singles use dating apps to meet new people.
A music recording with one main song
The band released their new single last week.
A one-dollar bill
Do you have change for a twenty? I need some singles.
A hotel room for one person
I booked a single for two nights.
In baseball, a hit that allows the batter to reach first base
He hit a single to left field in the third inning.
Verb
To select or distinguish from a group (usually followed by 'out')
The teacher singled out the best student for praise.