the world > animals > mammals > group Ungulata (hoofed) > group Ruminantia (sheep, goats, cows, etc.) > bos taurus or ox > [verb (intransitive)] > mill around (2)
intransitive. Australian, New Zealand, and South African. Of cattle, etc.: to move in a circle, esp. around others in the middle; to mill. Also in…
intransitive. Originally U.S. Of cattle: to move continuously round in a circling mass. Also with around.