Colludo, collûdis, pen. prod. collúsi, collûsum, pen. prod. collúdere. Virg.To play togither.Colludere cum aliquo.Cic. Colludere apud Iurifconsultos. Vlp. To pleade by couine, to the intent to deceyue.
Lewis and Short: Latin dictionary
col-lūdo (conl-), si, sum, 3, v. n., to play or sport together, play with (very rare). I. Prop., with dat.: (puer) gestit paribus colludere, Hor. A. P. 159.—Poet.: aut summā nantes in aquā colludere plumas, Verg. G. 1, 369: DIGITIS COLLVDENTIBVS TRADERE PECORA, Inscr. Orell. 3166.—II. Jurid. t. t., to keep up false appearances with one to the injury of a third person, to have a secret understanding with one, to act collusively, Cic. Verr. 2, 2, 24, 58; Dig. 3, 4, 7, 9; 41, 5, 7; Sen. Contr. 2, 11, 17: cf. collusio and colludium, 2.