noun, plural GI's or GIs, adjective, verb, GI'd, GI'ing.| 1. | a member or former member of the U.S. armed forces, esp. an enlisted soldier. |
| 2. | rigidly adhering to military regulations and practices; regimented; spit-and-polish: a platoon leader who tried to be more GI than anyone else. |
| 3. | of a standardized style or type issued by the U.S. armed forces: GI shoes; GI blankets. |
| 4. | conforming to the regulations or practices of the U.S. armed forces: Every recruit must get a GI haircut. |
| 5. | of, pertaining to, or characteristic of a U.S. enlisted person: a typical peacetime GI complaint. |
| 6. | to clean in preparation for inspection: to GI the barracks. |
| 7. | to follow military regulations and customs closely; shape up: You'd better learn to GI if you want to be promoted. |

GI abbr.
gastrointestinal
Gingival Index
gid
1.
2.
(1997-01-30)
| GID general improvement district |