ōpĭlĭo and ūpĭlĭo, ōnis, m. [for ovilio, from ovis],
I a shepherd : etiam opilio, qui pascit alienas oves, Plaut. As. 3, 1, 36.— Form upilio, Verg. E. 10, 19; Col. 7, 3, 13; Dig. 32, 1, 60; Vulg. Gen. 38, 12.—
II A kind of bird , otherwise unknown, Fest. p. 191 Müll.