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

The meaning of the Acronym 21B is...

21B is

  • Mount Desert Coast Guard Lifesaving Station / Weather Observation Station, Southwest Harbor, Maine USA

21B is also in:

Acronym Definition Searched: NCC CHAP 83261 DFS NRC PAC PU TIS AMS NWL WMF WDJA 65203 ล. VIC CDN