tíundargjöf (ON) noun

A gift of a tenth; a type of legal gift (ON löggjöf). In Jó Kge 22 it is specified that a person may give away up to a tenth of inherited goods to whomever he wishes, whereas a person may dispense up to a quarter of one’s possessions acquired elsewhere (ON fjórðungsgjöf). References to tenth gifts and quarter gifts appear in several late medieval Norwegian and Icelandic diplomas.

gift of a tenth ONorw FrL ArbB 4
tenth-gift OIce Jó Kge 22
ONorw MLL Ert 21 Lb 7 Refs:

Agnes Arnórsdóttir 2005; CV s.v. tíund; Fritzner; Hertzberg; KLNM s.v. donasjon, tiend; Páll Vídalín 1854 s.v. tíund, tíundargjöf