collūdĭum

I. A sporting, playing together: delphinorum, Sol. 12; so Symm. Ep. 3, 5.—

II. A secret, deceptive understanding, collusion, esp. in justice, Amm. 18, 5, 1; Cod. Th. 9, 42, 20; 11, 42, 7; Symm. Ep. 4, 20.