Lewis & Short

collēgĭum (conl-); in inscrr. sometimes corrupted COLLEGIVS, ii, m., Inscr. Orell. 2413; 4101 al.), ii, n. [collega].

  1. I. Abstr., the connection of associates, colleagues, etc., colleagueship (rare): ita, quae nostra officia fuerunt, pro collegio et pro propinquitate et vivo et mortuo ei praestitimus, Serv. ad Cic. Fam. 4, 12, 3: Decium, expertum mihi concordi collegio virum, mecum consulem faciatis, Liv. 10, 13. 13; so id. 22, 3, and 24, 6: magister equitum ex collegio prioris anni, id. 4, 17, 9; so id. 5, 18, 2; cf. Plin. 7, 12, 10, § 54; Tac. A. 3, 31; id. H. 1, 52 fin.: P. Decius consul per tot collegia expertus, Liv. 10, 26, 2.
    1. B. Trop.: auxiliatur (noctuis) accipiter conlegio quodam naturae, association, partnership, Plin. 10, 17, 19, § 39; Manil. 2, 161.
  2. II. Concr., persons united by the same office or calling, or living by some common rules, a college, guild, corporation, society, union, company, fraternity: ἑταιρία, συναρχία (so most freq.): nulla (erat) Romae societas vectigalium, nullum collegium aut concilium, etc., Cic. Sest. 14, 32: tribunorum plebis, id. Verr. 2, 2, 41, § 100; Suet. Caes. 23: praetorum, Cic. Off. 3, 20, 80: pontificum, Caes. B. C. 1, 72; Liv. 31, 9, 8: sacerdotum, Suet. Calig. 16: Flavialium, id. Dom. 4: augurum, Cic. Brut. 1, 1 al.: mercatorum, Liv. 2, 27, 5: Mercurialium, Cic. Q. Fr. 2, 5, 2: aerariūm fabrūm, Plin. 34, 1, 1, § 1: poëtarum, Val. Max. 3, 7, 11: ambubaiarum, Hor. S. 1, 2, 1 et saep.: tribuni … pro collegio pronuntiant, in the name of the (tribunitial) college, Liv. 4, 26, 9; cf. id. 44, 12, and ex collegii sententiā, id. 53, 7.