1. A usually soft and close-fitting head covering, either having no brim or with a visor. 2. a cardinal's cap; a sailor's cap. 3. 4. a bottle cap; a 35-millimeter lens cap. 5. A crown for covering or sealing a tooth. 6. A tread for a worn pneumatic tire. 7. A fitted covering used to seal a well or large pipe. 8. A summit or top, as of a mountain. 9. placed a cap on mortgage rates. 10. The capital of a column. 11. The top part, or pileus, of a mushroom. 12. A calyptra. 13. A percussion cap. 14. A small explosive charge enclosed in paper for use in a toy gun. 15. Any of several sizes of writing paper, such as foolscap. 16. To cover, protect, or seal with a cap. 17. capped the new women nurses at graduation. 18. hills capped with snow. 19. cap a meal with dessert. 20. capped his last trick with a disappearing act that brought the audience to its feet. 21. decided to cap cost-of-living increases. 22. Respectfully or humbly; unpretentiously. 23. To attempt to attract and win as a mate.
