What does 21M Stand For?
For 21M we have found 2 definitions.
What does 21M mean? We know 2 definitions for 21M abbreviation or acronym in 1 categories. Possible 21M meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Please look for them carefully.
21M Stands For:
|*****||21M||Currier's Seaplane Base|
|**||21M||Curriers Seaplane Base, Greenville Junction, Maine USA|