[1] : The Collaborative International Dictionary of English v.0.48

udaler \u"daler\, udalman \u"dalman\, n.
   in the shetland and orkney islands, one who holds property by
   udal, or allodial, right. --sir w. scott.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

udal \u"dal\ =u"dal, n.  a. udalborn \u"dalborn`\, udaler
\u"daler\, udalman \u"dalman\, etc.icel. =oethal
   allodium, an hereditary estate; akin to sw. odal allodial,
   dan. odel.
   vars. of odal, etc.; property held by udal, or allodial,
   right -- obs. exc. in shetland and the orkney islands, where
   udal designates a freehold, land held in fee simple without
   any charter and free of any feudal character.
   webster 1913 suppl.
see also:
odal 

Udaler >> U Words
Udaler, definition of term: Udaler
udaler_pag1.html