(US, military) Abbreviation of United States Army Marksmanship Unit.

(US, military, pathology) Abbreviation of United States Army Medical Research Institute of Infectious Diseases.

Former name of USAF. (United States Air Force); Initialism of United States Army Air Forces.

Former name of USAAF (“United States Army Air Force”). (now, USAF (“United States Air Force”)) Initialism of United States Army Air Corps.

Former name of USAAC (“United States Army Air Corps”). (now, USAF (“United States Air Force”)); Initialism of United States Army Air Service.

Acronym of United States Air Force Academy.

plural of usage guide

(linguistics, education) A book that explains how to use a standardised language correctly and in keeping with currently accepted style, usually through the explication of what are conservatively viewed as language "errors".

A hamlet south of Montrose, Angus council area, Scotland (OS grid ref NO7254).

plural of usageaster