Noun
Moesi pl (plural only)
A Daco-Thracian tribe who inhabited present-day Serbia and Bulgaria, part of the then Roman province of Moesia.
After a successful campaign which resulted in the submission of a substantial section of the Moesi, Crassus again sought out the Bastarnae. Source: Internet
Dio LI.23.5 Crassus now turned his attention to the Moesi, his prime target. Source: Internet