| 1. | a covering of leather, rubber, or the like, for the foot and all or part of the leg. |
| 2. | Chiefly British. any shoe or outer foot covering reaching to the ankle. |
| 3. | an overshoe, esp. one of rubber or other waterproof material. |
| 4. | an instrument of torture for the leg, consisting of a kind of vise extending from the knee to the ankle, tightened around the leg by means of screws. |
| 5. | any sheathlike protective covering: a boot for a weak automobile tire. |
| 6. | a protective covering for the foot and part of the leg of a horse. |
| 7. | a protecting cover or apron for the driver's seat of an open vehicle. |
| 8. | the receptacle or place into which the top of a convertible car fits when lowered. |
| 9. | a cloth covering for this receptacle or place. |
| 10. | British. the trunk of an automobile. |
| 11. | a rubber covering for the connection between each spark-plug terminal and ignition cable in an automotive ignition system. |
| 12. | Also called Denver boot. a metal device attached to the wheel of a parked car so that it cannot be driven away until a fine is paid or the owner reports to the police: used by police to catch scofflaws. |
| 13. | U.S. Navy, Marines. a recruit. |
| 14. | Music. the box that holds the reed in the reed pipe of an organ. |
| 15. | a kick. |
| 16. | Slang. a dismissal; discharge: They gave him the boot for coming in late. |
| 17. | Informal. a sensation of pleasure or amusement: Watching that young skater win a gold medal gave me a real boot. |
| 18. | Baseball. a fumble of a ball batted on the ground, usually to the infield. |
| 19. | to kick; drive by kicking: The boy booted a tin can down the street. |
| 20. | Football. to kick. |
| 21. | Baseball. to fumble (a ground ball). |
| 22. | to put boots on; equip or provide with boots. |
| 23. | Also, bootstrap. Computers.
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| 24. | Slang. to dismiss; discharge: They booted him out of school for not studying. |
| 25. | to attach a Denver boot to: Police will boot any car with unpaid fines. |
| 26. | to torture with the boot. |
| 27. | bet your boots, to be sure or certain: You can bet your boots that I'll be there! |
| 28. | die with one's boots on,
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| 29. | get a boot, Informal. to derive keen enjoyment: I really got a boot out of his ridiculous stories. |

boot
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die with one's boots on
Also, die in harness. Expire while working, keep working to the end, as in He'll never retire
he'll die with his boots on, or She knows she'll never get promoted, but she wants to die in harness. Both phrases probably allude to soldiers who died on active duty. Until the early 1600s the noun boot denoted a piece of armor for the legs, which may have given rise to this usage; and Shakespeare used harness in the sense of armor when he wrote: "At least we'll die with harness on our back" (Macbeth 5:5).