WordNet (r) 3.0 (2006):

dead march
    n 1: a slow march to be played for funeral processions [syn:
         funeral march, dead march]

Moby Thesaurus II by Grady Ward, 1.0:

63 Moby Thesaurus words for "dead march":
   andante, burial, burial at sea, burying, claudication, coronach,
   cortege, crawl, creep, death knell, death song, deep six, dirge,
   dogtrot, elegy, epicedium, eulogy, footpace, funeral,
   funeral march, funeral oration, funeral procession, funeral song,
   graveside oration, hobble, jog, jog trot, keen, knell, last post,
   leisurely gait, limp, lumbering pace, march, martial music,
   military march, military music, mincing steps, monody,
   muffled drum, muffled drums, passing bell, plod,
   processional march, quick march, quickstep march, rack,
   recessional march, requiem, saunter, shamble, shuffle, slouch,
   slow march, slow motion, stroll, taps, threnode, threnody, trudge,
   waddle, walk, wedding march