Lewis & Short

congestĭo, ōnis, f. [1. congero], lit. a bringing together; hence, a heaping up, accumulation (rare and not ante-Aug.).

  1. I. In abstr.
    1. A. Prop.: terrae, Vitr. 6, 8, 5; Pall. Mart. 1, 4: stercorum, Pall. 1, 33, 1.
    2. B. Trop.: enumerationis, Macr. S. 5, 15 fin.: honorum, Mamert. Grat. Act. ad Julian. 22.
  2. II. In concr., that which is heaped up, a heap, mass, pile, Dig. 19, 2, 57.