l]
adjective, verb, -gled, -gling, noun | 1. | only one in number; one only; unique; sole: a single example. |
| 2. | of, pertaining to, or suitable for one person only: a single room. |
| 3. | solitary or sole; lone: He was the single survivor. |
| 4. | unmarried: a single man. |
| 5. | pertaining to the unmarried state: the single life. |
| 6. | of one against one, as combat or fight. |
| 7. | consisting of only one part, element, or member: a single lens. |
| 8. | sincere and undivided: single devotion. |
| 9. | separate, particular, or distinct; individual: Every single one of you must do your best. It's the single most important thing. |
| 10. | uniform; applicable to all: a single safety code for all manufacturers. |
| 11. | (of a bed or bedclothes) twin-size. |
| 12. | (of a flower) having only one set of petals. |
| 13. | British. of standard strength or body, as ale, beer, etc. Compare double (def. 1). |
| 14. | (of the eye) seeing rightly. |
| 15. | to pick or choose (one) from others (usually fol. by out): to single out a fact for special mention. |
| 16. | Baseball.
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| 17. | Baseball. to hit a single. |
| 18. | one person or thing; a single one. |
| 19. | an accommodation suitable for one person only, as a hotel room or a table at a restaurant: to reserve a single. |
| 20. | a ticket for a single seat at a theater. |
| 21. | British.
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| 22. | an unmarried person, esp. one who is relatively young. |
| 23. | Baseball. Also called one-base hit. a base hit that enables a batter to reach first base safely. |
| 24. | singles, (used with a singular verb ) a match with one player on each side, as a tennis match. |
| 25. | Golf. twosome (def. 4). |
| 26. | Cricket. a hit for which one run is scored. |
| 27. | Informal. a one-dollar bill. |
| 28. | a phonograph record, CD, or cassette usually having two songs. |
| 29. | one of the songs recorded on a single. |
| 30. | Often, singles. Textiles.
|

Single
The filing status used by a taxpayer who is unmarried and does not qualify for any other filing status.
Investopedia Commentary
Your filing status does affect your taxation bracket.
See also: Filing Status, Full-Time Student, Marital Deduction, Married Filing Jointly, Married Filing Separately
single
In addition to the idioms beginning with single, also see each and every (every single).