1. MWU - Noun
2. MWU - Proper noun
MWU (plural MWUs)
Initialism of multi-word unit.
Initialism of Maccabi World Union.
Initialism of Merriam-Webster Unabridged, edition of Webster’s Dictionary.
Initialism of Midwestern University.
Initialism of Mine Workers’ Union, predecessor of Solidarity (South African trade union).
Source: en.wiktionary.org