Reconstruction:Proto-Germanic/jeuką

Etymology
From. Cognate with Ancient Greek 🇨🇬.

Noun

 * 1)  team of draft animals, pair of oxen

Descendants
Although the German reflex has different meaning, it must have gone through an intermediate stage of "yoked animals" > "area that a yoke can plow", just as English acre(age) stands for the specific "area that a yoke can plow".