raglan sleeve

from WordNet (r) 3.0 (2006)

raglan sleeve
    n 1: a sleeve that extends in one piece to the neckline of a
         coat or sweater with seams from the armhole to the neck

from The Collaborative International Dictionary of English v.0.48

raglan sleeve \rag"lan sleeve`\ (r[a^]g"lan sl[=e]v`), n.
   A sleeve joined to the body of a garment by a long slanting
   seam starting at the neck and continuing around the armhole.
   Contrasted to a {set-in sleeve}.
   [PJC]