[kach-wurd] 
| 1. | a memorable or effective word or phrase that is repeated so often that it becomes a slogan, as in a political campaign or in advertising a product. |
| 2. | Also called headword, guide word. a word printed at the top of a page in a dictionary or other reference book to indicate the first or last entry or article on that page. Compare running head. |
| 3. | a device, used esp. in old books, to assist the binder in assembling signatures by inserting at the foot of each page the first word of the following page. |
| 4. | keyword (def. 4). |
