Acronyms, Abbreviations, and Initialisms.
All human edited and we add more daily

The meaning of the Acronym 21D is...

21D is

  • Lake Elmo Airport, Lake Elmo, Minnesota USA

21D is also in:

Acronym Definition Searched: NICHY VMO-6 2T3 22204 NKT HMF FM 04764 NERAY VGU WS1 ADT DFA GAS IOC