Gaius = "lord"
1) a Macedonian who accompanied Paul in his travels
2) a man from Derbe who went with Paul from Corinth in his last journey to Jerusalem
3) a man of Corinth who was his host in his second sojourn in that city
4) an unknown Christian to whom John's third epistle is addressed
Part of Speech: noun proper masculine
Of Latin origin; Gaius (that is, Caius), a Christian: - Gaius.
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 Γάϊος; click on the second column to search for that grammatical form of the root Γάϊος; click on the third column to search for that word and grammatical form; click on the total to search for the root Γάϊος.