The Collaborative International Dictionary
Udaler
Udal \U"dal\ ([=u]"dal), n. & a. Udalborn \U"dal*born`\, Udaler \U"dal*er\, Udalman \U"dal*man\, etc.[Icel. [=o][eth]al 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.
Udaler
Udaler \U"dal*er\, Udalman \U"dal*man\, n.
In the Shetland and Orkney Islands, one who holds property by
udal, or allodial, right.
--Sir W. Scott.
Wiktionary
udaler
n. (context Shetland Orkney English) One who holds property by udal, or allodial, right.