The Collaborative International Dictionary of English v.0.48:

Longways \Long"ways`\, adv.
   Lengthwise. --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

longways
    adv 1: in the direction of the length; "He cut the paper
           lengthwise" [syn: lengthways, lengthwise, longwise,
           longways, longitudinally]
    n 1: country dancing performed with couples in two long lines
         facing each other [syn: longways, longways dance]