I. ˌjē-ˈī adjective
Etymology: g alvanized i ron; from abbreviation used in listing such articles as garbage cans, but taken as abbreviation for government issue
Date: circa 1935
1. : provided by an official United States military supply department
GI shoes
2. : of, relating to, or characteristic of United States military personnel
3. : conforming to military regulations or customs
a GI haircut
II. noun
( plural GIs or GI's -ˈīz)
Date: 1943
: a member or former member of the United States armed forces ; especially : a man enlisted in the army
III. adverb
Date: 1949
: in a strictly regulation manner
IV. transitive verb
( GI'd -ˈīd ; GI'·ing -ˈī-iŋ)
Date: 1951
: to clean thoroughly (as floors) in preparation for or as if for a military inspection
V. abbreviation
1. galvanized iron
2. gastrointestinal
3. general issue; government issue