(military) 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.

A member of the U.S. military. / One who is demanding and strict, in the manner of a stereotypical member of the military. / Initialism of galvanized iron. / Initialism of geographical indication.

(military) To clean aggressively.

A martial arts uniform.

Initialism of Gas Injection System. / Initialism of Geographic Information Science. / Initialism of Geographic Information Systems.

simple past tense and past participle of GI

present participle of GI

plural of GI

Third-person singular simple present indicative form of GI

(ornithology, slang) Alternative spelling of jizz