LTReikšminiai žodžiai: Amredita tipas; Baltų kalbos; Dūrinys; Hidronimas; Prūsų kalba; Semema; Tatpurusa tipas; Toponimas; Amredita type; Baltic languages; Compound; Hydronym; Prussian; Sememe; Tatpurusa type; Toponym.
ENThe article presents an analysis of the most frequent word-formation models of Prussian toponyms and hydronyms of the compositional type with the component OPr. laucks "a field, an arable land". On the basis of the analysis the following conclusions can be drawn: 1) a sememe of the adj. OPr. *laukas "light" can be restored, being based only on the non-compositional type hydronym OPr. 1306 Laukėti; 2) Prussian toponym 1318 Laukoslauk and its variants 1340 Loukauslauken, 1358 Locau- slauken, 1364 Laukeslauken, 1365 Locaustlauken, 1382 Lawkaslauken, Lokaslawketi reflect reduplicated word-formation type and underlie reconstruction of the sememe "a field of fields <->the big field". [From the publication]