Lewis Short
(adjective) : con-grex, grĕgis, (post-class.).
* Of the same herd or flock: equinis armentis,App. M. 7, p. 194, 41: aves,Sol. 2 dub. (al. congregatae).—Hence
* In gen., collected in flocks or multitudes: catervas, Auct. Pervig. Ven. 43: vulgo,Aus. Ep. 10, 21.—With dat.: comessationibus,Tert. Poen. 11.
* Trop., close, intimate: aliquem congrege nexu tenere, Prud. contra Symm. 2, 634.
Charlton T. Lewis, Charles Short, A Latin Dictionary