The Collaborative International Dictionary of English v.0.48:

Endways \End"ways`\, Endwise \End"wise\, adv.
   1. On end; erectly; in an upright position.
      [1913 Webster]

   2. With the end forward.
      [1913 Webster]

WordNet (r) 3.0 (2006):

endways
    adv 1: on end or upright; "sticks leaning against the wall
           endways" [syn: endways, endwise]
    2: in or toward the direction of the ends; lengthwise; "endways
       pressure" [syn: endways, endwise]
    3: with the end forward or toward the observer; "houses built
       endways" [syn: endways, endwise, end on]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "endways":
   adjacent, adjoining, along, at attention, at length, bolt upright,
   bordering, connecting, conterminous, contiguous, coterminous,
   end to end, endlong, endwise, erectly, face to face, immediate,
   in length, joined, juxtaposed, juxtapositional, juxtapositive,
   lengthways, lengthwise, longitudinally, longways, longwise,
   neighbor, neighboring, next, on end, right on end, up, up on end,
   upright, uprightly, upstandingly