[flag] 
noun, verb, flagged, flag⋅ging.| 1. | a piece of cloth, varying in size, shape, color, and design, usually attached at one edge to a staff or cord, and used as the symbol of a nation, state, or organization, as a means of signaling, etc.; ensign; standard; banner; pennant. |
| 2. | Ornithology. the tuft of long feathers on the legs of falcons and most hawks; the lengthened feathers on the crus or tibia. |
| 3. | Hunting. the tail of a deer or of a setter dog. |
| 4. | Journalism.
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| 5. | a tab or tag attached to a page, file card, etc., to mark it for attention. |
| 6. | Music. hook (def. 12a). |
| 7. | Movies, Television. a small gobo. |
| 8. | Usually, flags. the ends of the bristles of a brush, esp. a paintbrush, when split. |
| 9. | Computers. a symbol, value, or other means of identifying data of interest, or of informing later parts of a program what conditions earlier parts have encountered. |
| 10. | to place a flag or flags over or on; decorate with flags. |
| 11. | to signal or warn (a person, automobile, etc.) with or as if with a flag (sometimes fol. by down): to flag a taxi; to flag down a passing car. |
| 12. | to communicate (information) by or as if by a flag. |
| 13. | to decoy, as game, by waving a flag or the like to excite attention or curiosity. |
| 14. | to mark (a page in a book, file card, etc.) for attention, as by attaching protruding tabs. |
| 15. | (of a brush) to split the ends of the bristles. |
| 16. | strike the flag,
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