Proto-Baltic: *lauk-a- m. (Lith CIRC/Lett AC)
Meaning: field
Lithuanian: laũka-s `Feld, Acker, Ackerboden, Land', direct. laũk(an), laukañ 'hinaus, heraus'
Lettish: laũks 'Waldsblösse, Lichtung, waldlose Fläche im Walde; das Freie, freies Feld'
Old Prussian: laucks 'Acker, Feld'