GNU Collaborative International Dictionary of English

Found one definition

1.       
   Raglan (răgˈlan), n.
   1. A loose overcoat with large sleeves; -- named after Lord Raglan, an English general who was an aide-de-camp to Wellington at Waterlooo.
   
   [1913 Webster]
   
   
   2. An overcoat with raglan sleeves.
   
   [PJC]