Middle English young man, servantfrom Old Norse sveinns(w)e- in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
From Old Norse sveinn, from Proto-Germanic*swaina-, *swainaz (“relative, young man, servant"), from Proto-Indo-European*se- (“aside, separated, apart"). Cognate with Old English swān.
Swain Sentence Examples
In effect, they create a personality for the uncouth swain.
By giving shelter to the fugitive Eadgils, a rebel against his uncle the king of the " Swain " (the Swedes, dwelling to the north of the Gautar), Heardred brought on himself an invasion, in which he lost his life.
Pediatric dietitian, Dave Swain, has some words of advice.