gi

noun

1. A martial arts uniform.

   “By the time they got up to the reception building, there was a welcoming committee standing in the lamp-lined drive, all in black gi, headed by a tall, fit, scholarly-looking woman named Sister Rochelle […]”

   “Attenders watched the Mad Max: Fury Road star, dressed in a blue gi, subdue his opponents and win all his matches. Hardy’s certificate of achievement was awarded to “Edward Hardy” – the actor’s real name.”

2. (countable, uncountable)A member of the U.S. military.
3. (broadly, countable, uncountable)One who is demanding and strict, in the manner of a stereotypical member of the military.
4. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of galvanized iron.
5. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of geographical indication.
6. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of glycemic index.
7. (abbreviation, alt-of, countable, initialism, uncountable)Initialism of global illumination.

adj

1. (abbreviation, alt-of, initialism, not-comparable)Initialism of general issue, given to a soldier by the army (as an item), rather than brought from home; or used by the army (as a procedure), and different from its civilian counterpart.

   “Soldiers counted cadence by chanting: “GI brush / And GI comb / Gee, I wish that I was home!””

2. (abbreviation, alt-of, initialism, not-comparable)Initialism of gastrointestinal.

   “GI tract”

   “Endometriosis, which involves tissue similar to uterine tissue growing elsewhere in the body, has myriad symptoms, including GI distress, migraines, discomfort during sex and abdominal pain that can range from debilitating to excruciating.”

3. (US, abbreviation, alt-of, initialism, not-comparable)Initialism of government issue.

verb

1. To clean aggressively.

   “Top, get the unit to GI this AO before the old man arrives.”

   “Afterwards, a lifer noncom would go ape shit over his low-speed high-drag peons and plan a GI party, sometimes giving his half-stepping shamurai warriors instructions about dust bunnies and getting everything dress right dress while adjusting their headspace and timing in the front leaning rest position.”