Samothracia = "a sign of rags"
1) an island on the Aegean Sea, about 38 Miles (60 km) from the coast of Thrace at the mouth of the river Hebrus
Part of Speech: noun proper locative
From G4544 and Θρᾴκη Thrakê (Thrace); Samo-thrace (Samos of Thrace), an island in the Mediterranean: - Samothrace.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root Σαμοθρᾴκη; click on the second column to search for that grammatical form of the root Σαμοθρᾴκη; click on the third column to search for that word and grammatical form; click on the total to search for the root Σαμοθρᾴκη.