Lewis & Short

ēnarrātĭo, ōnis, f. [enarro],

  1. I. a detailed exposition, interpretation: ineffabilis sanctusque sermo, cujus enarratio modum hominis excedat, Lact. 4, 9, 3; Quint. 1, 4, 2 sq.; 1, 8, 18 al.
  2. II. Esp., the reckoning in metre, scanning: syllabarum, Sen. Ep. 88, 3.
    1. B. Conversation, Vulg. Sirach, 9, 23; 38, 26.