LSM
a type of military landing ship slightly more than 200 feet (60 meters) long.
Origin of LSM
l(anding) s(hip) m(edium)
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for lsm
Lauer pointed out that for the morning, at least, she was a member of the “LSM” herself.