וַיִּפְנ֖וּ וַיֵּלֵ֑כוּ וַיָּשִׂ֨ימוּ אֶת־הַטַּ֧ף וְאֶת־הַמִּקְנֶ֛ה וְאֶת־הַכְּבוּדָּ֖ה לִפְנֵיהֶֽם׃
Y ellos tornaron y fuéronse; y pusieron los niños, y el ganado y el bagaje, delante de sí.
Rashi on Judges
The bulky cargo. The loads. Anything which moved ponderously, thus making it impossible to move quickly should the local inhabitants pursue them.