[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). |
[kee-wurd] | 1. | a word that serves as a key, as to the meaning of another word, a sentence, passage, or the like: Search the database for the keyword “Ireland.” |
| 2. | a word used to encipher or decipher a cryptogram, as a pattern for a transposition procedure or the basis for a complex substitution. |
| 3. | Also called catchword. Library Science. a significant or memorable word or term in the title, abstract, or text of an item being indexed, used as the index entry. |
| catch·word (kāch'wûrd', kěch'-) n.
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