Kirsnys

Cf. Kirsnìs (see). The origin is unclear. Connect with lit. kir̃snas „tamsiai juodas (arklys)“ (Mrj) would be possible only if we suspect this, apparently Jotvingian word (OPr. kirsnan „juodas“) to have sleuths as well. Perhaps derived from lit. waist „kas joja tursuodamas, kesnodamas“ (LKŽ V 854).