numeral / noun
four
FOR/fˈɔr/
The number after three and before five.
The row contains exactly four evenly spaced red apples.

Etymology
Old English feower already meant “four” and could also mean “four times”; the selected sense preserves its use for the number itself.
In context
we have a four in the bottom we're counting each beat as a crotchet or as a quarter note
More examples
- The clock strikes four.
- Divide the class into groups of four.
- She rolled a four.
Forms
four · fours